/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 09:32:51,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 09:32:51,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 09:32:51,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 09:32:51,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 09:32:51,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 09:32:51,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 09:32:51,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 09:32:51,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 09:32:51,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 09:32:51,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 09:32:51,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 09:32:51,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 09:32:51,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 09:32:51,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 09:32:51,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 09:32:51,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 09:32:51,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 09:32:51,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 09:32:51,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 09:32:51,241 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 09:32:51,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 09:32:51,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 09:32:51,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 09:32:51,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 09:32:51,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 09:32:51,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 09:32:51,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 09:32:51,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 09:32:51,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 09:32:51,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-05 09:32:51,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 09:32:51,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 09:32:51,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 09:32:51,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 09:32:51,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 09:32:51,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 09:32:51,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 09:32:51,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 09:32:51,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 09:32:51,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 09:32:51,292 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 09:32:51,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 09:32:51,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 09:32:51,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 09:32:51,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 09:32:51,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 09:32:51,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 09:32:51,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:32:51,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 09:32:51,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 09:32:51,296 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 09:32:51,297 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 09:32:51,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 09:32:51,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 09:32:51,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 09:32:51,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 09:32:51,541 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 09:32:51,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-04-05 09:32:51,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f3d4b8e/4895e250809d446d95ed14b95e1a1f68/FLAGe52ddecc6 [2022-04-05 09:32:52,072 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 09:32:52,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-04-05 09:32:52,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f3d4b8e/4895e250809d446d95ed14b95e1a1f68/FLAGe52ddecc6 [2022-04-05 09:32:52,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f3d4b8e/4895e250809d446d95ed14b95e1a1f68 [2022-04-05 09:32:52,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 09:32:52,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 09:32:52,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 09:32:52,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 09:32:52,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 09:32:52,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:32:52" (1/1) ... [2022-04-05 09:32:52,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4ae204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:52, skipping insertion in model container [2022-04-05 09:32:52,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:32:52" (1/1) ... [2022-04-05 09:32:52,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 09:32:52,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 09:32:52,942 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-2.c[48585,48598] [2022-04-05 09:32:52,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:32:52,951 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 09:32:53,075 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-2.c[48585,48598] [2022-04-05 09:32:53,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:32:53,101 INFO L208 MainTranslator]: Completed translation [2022-04-05 09:32:53,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53 WrapperNode [2022-04-05 09:32:53,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 09:32:53,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 09:32:53,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 09:32:53,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 09:32:53,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 09:32:53,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 09:32:53,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 09:32:53,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 09:32:53,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (1/1) ... [2022-04-05 09:32:53,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:32:53,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:32:53,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 09:32:53,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 09:32:53,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 09:32:53,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 09:32:53,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 09:32:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-05 09:32:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-04-05 09:32:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-04-05 09:32:53,311 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-04-05 09:32:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-04-05 09:32:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-04-05 09:32:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-04-05 09:32:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-04-05 09:32:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-05 09:32:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-05 09:32:53,315 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-04-05 09:32:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-05 09:32:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 09:32:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 09:32:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-04-05 09:32:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-05 09:32:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-04-05 09:32:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-04-05 09:32:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-05 09:32:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-05 09:32:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-05 09:32:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-04-05 09:32:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-05 09:32:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 09:32:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 09:32:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 09:32:53,571 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 09:32:53,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 09:32:53,592 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,624 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:53,624 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:53,634 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,641 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:53,641 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:53,645 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,769 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-05 09:32:53,770 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-05 09:32:53,771 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,834 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-04-05 09:32:53,835 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-04-05 09:32:53,852 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,868 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-05 09:32:53,868 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-05 09:32:53,959 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:53,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:53,966 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,974 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:53,974 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:53,975 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:53,987 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:53,988 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:54,013 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:54,035 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-05 09:32:54,035 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-05 09:32:54,037 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:54,178 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-04-05 09:32:54,179 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-04-05 09:32:54,228 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:54,232 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:54,232 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:54,233 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:54,247 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:54,247 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:54,248 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 09:32:54,253 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-05 09:32:54,253 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-05 09:32:54,267 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 09:32:54,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 09:32:54,277 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 09:32:54,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:32:54 BoogieIcfgContainer [2022-04-05 09:32:54,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 09:32:54,281 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 09:32:54,281 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 09:32:54,282 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 09:32:54,285 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:32:54" (1/1) ... [2022-04-05 09:32:54,287 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 09:32:54,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:32:54 BasicIcfg [2022-04-05 09:32:54,341 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 09:32:54,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 09:32:54,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 09:32:54,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 09:32:54,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 09:32:52" (1/4) ... [2022-04-05 09:32:54,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3ad38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:32:54, skipping insertion in model container [2022-04-05 09:32:54,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:32:53" (2/4) ... [2022-04-05 09:32:54,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3ad38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:32:54, skipping insertion in model container [2022-04-05 09:32:54,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:32:54" (3/4) ... [2022-04-05 09:32:54,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3ad38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:32:54, skipping insertion in model container [2022-04-05 09:32:54,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:32:54" (4/4) ... [2022-04-05 09:32:54,348 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.cqvasr [2022-04-05 09:32:54,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 09:32:54,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 09:32:54,412 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 09:32:54,419 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 09:32:54,420 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 09:32:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 288 states have (on average 1.46875) internal successors, (423), 314 states have internal predecessors, (423), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) [2022-04-05 09:32:54,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 09:32:54,465 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:32:54,465 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:32:54,466 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:32:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:32:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash 871879161, now seen corresponding path program 1 times [2022-04-05 09:32:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:32:54,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106294969] [2022-04-05 09:32:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:32:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:32:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:32:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:32:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:32:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:32:54,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106294969] [2022-04-05 09:32:54,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106294969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:32:54,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:32:54,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 09:32:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612479926] [2022-04-05 09:32:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:32:54,915 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 09:32:54,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:32:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 09:32:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:32:54,952 INFO L87 Difference]: Start difference. First operand has 389 states, 288 states have (on average 1.46875) internal successors, (423), 314 states have internal predecessors, (423), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 09:32:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:32:56,173 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2022-04-05 09:32:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 09:32:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-05 09:32:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:32:56,205 INFO L225 Difference]: With dead ends: 666 [2022-04-05 09:32:56,205 INFO L226 Difference]: Without dead ends: 422 [2022-04-05 09:32:56,218 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:32:56,221 INFO L913 BasicCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:32:56,222 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 735 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:32:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-04-05 09:32:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2022-04-05 09:32:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 282 states have (on average 1.429078014184397) internal successors, (403), 306 states have internal predecessors, (403), 71 states have call successors, (71), 28 states have call predecessors, (71), 26 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 09:32:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2022-04-05 09:32:56,318 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2022-04-05 09:32:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:32:56,318 INFO L478 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2022-04-05 09:32:56,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 09:32:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2022-04-05 09:32:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-05 09:32:56,321 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:32:56,321 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] [2022-04-05 09:32:56,321 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 09:32:56,321 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:32:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:32:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 291212257, now seen corresponding path program 1 times [2022-04-05 09:32:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:32:56,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894039777] [2022-04-05 09:32:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:32:56,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:32:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:32:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:32:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:32:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:32:56,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:32:56,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894039777] [2022-04-05 09:32:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894039777] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:32:56,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:32:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:32:56,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961603272] [2022-04-05 09:32:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:32:56,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:32:56,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:32:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:32:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:32:56,527 INFO L87 Difference]: Start difference. First operand 380 states and 523 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) [2022-04-05 09:32:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:32:57,953 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2022-04-05 09:32:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:32:57,953 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 [2022-04-05 09:32:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:32:57,961 INFO L225 Difference]: With dead ends: 747 [2022-04-05 09:32:57,962 INFO L226 Difference]: Without dead ends: 584 [2022-04-05 09:32:57,966 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:32:57,968 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 717 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:32:57,968 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 892 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:32:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-04-05 09:32:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2022-04-05 09:32:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.3530864197530865) internal successors, (548), 410 states have internal predecessors, (548), 78 states have call successors, (78), 41 states have call predecessors, (78), 41 states have return successors, (90), 75 states have call predecessors, (90), 66 states have call successors, (90) [2022-04-05 09:32:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2022-04-05 09:32:58,017 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2022-04-05 09:32:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:32:58,018 INFO L478 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2022-04-05 09:32:58,018 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) [2022-04-05 09:32:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2022-04-05 09:32:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-05 09:32:58,019 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:32:58,019 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] [2022-04-05 09:32:58,019 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 09:32:58,019 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:32:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:32:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 525888156, now seen corresponding path program 1 times [2022-04-05 09:32:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:32:58,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162516576] [2022-04-05 09:32:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:32:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:32:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:32:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:32:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:32:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:32:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:32:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162516576] [2022-04-05 09:32:58,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162516576] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:32:58,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:32:58,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:32:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341376366] [2022-04-05 09:32:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:32:58,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:32:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:32:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:32:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:32:58,179 INFO L87 Difference]: Start difference. First operand 525 states and 716 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) [2022-04-05 09:32:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:32:58,955 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2022-04-05 09:32:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:32:58,955 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 [2022-04-05 09:32:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:32:58,959 INFO L225 Difference]: With dead ends: 695 [2022-04-05 09:32:58,960 INFO L226 Difference]: Without dead ends: 676 [2022-04-05 09:32:58,960 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:32:58,961 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 946 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:32:58,961 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 603 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:32:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-04-05 09:32:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2022-04-05 09:32:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 450 states have (on average 1.3488888888888888) internal successors, (607), 463 states have internal predecessors, (607), 82 states have call successors, (82), 46 states have call predecessors, (82), 50 states have return successors, (101), 78 states have call predecessors, (101), 72 states have call successors, (101) [2022-04-05 09:32:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2022-04-05 09:32:59,001 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2022-04-05 09:32:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:32:59,001 INFO L478 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2022-04-05 09:32:59,002 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) [2022-04-05 09:32:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2022-04-05 09:32:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 09:32:59,003 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:32:59,003 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] [2022-04-05 09:32:59,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 09:32:59,004 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:32:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:32:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2004508172, now seen corresponding path program 1 times [2022-04-05 09:32:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:32:59,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881502473] [2022-04-05 09:32:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:32:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:32:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:32:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:32:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:32:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:32:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:32:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:32:59,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881502473] [2022-04-05 09:32:59,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881502473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:32:59,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:32:59,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:32:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455508575] [2022-04-05 09:32:59,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:32:59,141 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:32:59,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:32:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:32:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:32:59,142 INFO L87 Difference]: Start difference. First operand 583 states and 790 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) [2022-04-05 09:33:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:00,364 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2022-04-05 09:33:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:33:00,365 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 [2022-04-05 09:33:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:00,371 INFO L225 Difference]: With dead ends: 1117 [2022-04-05 09:33:00,372 INFO L226 Difference]: Without dead ends: 819 [2022-04-05 09:33:00,373 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:00,380 INFO L913 BasicCegarLoop]: 541 mSDtfsCounter, 724 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:00,381 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 744 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-04-05 09:33:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2022-04-05 09:33:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 606 states have (on average 1.33993399339934) internal successors, (812), 616 states have internal predecessors, (812), 99 states have call successors, (99), 61 states have call predecessors, (99), 65 states have return successors, (136), 97 states have call predecessors, (136), 91 states have call successors, (136) [2022-04-05 09:33:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2022-04-05 09:33:00,437 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2022-04-05 09:33:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:00,438 INFO L478 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2022-04-05 09:33:00,438 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) [2022-04-05 09:33:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2022-04-05 09:33:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 09:33:00,440 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:00,440 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:00,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 09:33:00,440 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1331218314, now seen corresponding path program 1 times [2022-04-05 09:33:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040878793] [2022-04-05 09:33:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:33:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:00,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040878793] [2022-04-05 09:33:00,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040878793] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:00,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:00,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465293446] [2022-04-05 09:33:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:00,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:00,585 INFO L87 Difference]: Start difference. First operand 771 states and 1047 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-04-05 09:33:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:01,752 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2022-04-05 09:33:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 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 38 [2022-04-05 09:33:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:01,757 INFO L225 Difference]: With dead ends: 865 [2022-04-05 09:33:01,757 INFO L226 Difference]: Without dead ends: 860 [2022-04-05 09:33:01,757 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 [2022-04-05 09:33:01,758 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 516 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:01,758 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 945 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-04-05 09:33:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2022-04-05 09:33:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 636 states have (on average 1.3333333333333333) internal successors, (848), 648 states have internal predecessors, (848), 99 states have call successors, (99), 61 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-05 09:33:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2022-04-05 09:33:01,807 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 38 [2022-04-05 09:33:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:01,807 INFO L478 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2022-04-05 09:33:01,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-04-05 09:33:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2022-04-05 09:33:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 09:33:01,809 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:01,809 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:01,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 09:33:01,809 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 528133378, now seen corresponding path program 1 times [2022-04-05 09:33:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:01,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638631314] [2022-04-05 09:33:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:01,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638631314] [2022-04-05 09:33:01,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638631314] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:01,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:01,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 09:33:01,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299377435] [2022-04-05 09:33:01,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:01,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 09:33:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 09:33:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 09:33:01,955 INFO L87 Difference]: Start difference. First operand 808 states and 1090 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) [2022-04-05 09:33:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:03,217 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2022-04-05 09:33:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 09:33:03,217 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 [2022-04-05 09:33:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:03,222 INFO L225 Difference]: With dead ends: 842 [2022-04-05 09:33:03,222 INFO L226 Difference]: Without dead ends: 839 [2022-04-05 09:33:03,222 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:33:03,223 INFO L913 BasicCegarLoop]: 467 mSDtfsCounter, 256 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:03,223 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 743 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-04-05 09:33:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2022-04-05 09:33:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.3323029366306027) internal successors, (862), 658 states have internal predecessors, (862), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-05 09:33:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2022-04-05 09:33:03,272 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2022-04-05 09:33:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:03,272 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2022-04-05 09:33:03,272 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) [2022-04-05 09:33:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2022-04-05 09:33:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 09:33:03,274 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:03,274 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] [2022-04-05 09:33:03,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 09:33:03,274 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1133526780, now seen corresponding path program 1 times [2022-04-05 09:33:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:03,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301817645] [2022-04-05 09:33:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:33:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301817645] [2022-04-05 09:33:03,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301817645] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:03,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:03,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:03,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403734132] [2022-04-05 09:33:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:03,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:03,525 INFO L87 Difference]: Start difference. First operand 819 states and 1104 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) [2022-04-05 09:33:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:05,661 INFO L93 Difference]: Finished difference Result 877 states and 1176 transitions. [2022-04-05 09:33:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:33:05,662 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 [2022-04-05 09:33:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:05,666 INFO L225 Difference]: With dead ends: 877 [2022-04-05 09:33:05,666 INFO L226 Difference]: Without dead ends: 871 [2022-04-05 09:33:05,667 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 [2022-04-05 09:33:05,668 INFO L913 BasicCegarLoop]: 455 mSDtfsCounter, 1349 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:05,668 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1168 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 09:33:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-04-05 09:33:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-04-05 09:33:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.330757341576507) internal successors, (861), 658 states have internal predecessors, (861), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-05 09:33:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1103 transitions. [2022-04-05 09:33:05,739 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1103 transitions. Word has length 40 [2022-04-05 09:33:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:05,740 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1103 transitions. [2022-04-05 09:33:05,740 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) [2022-04-05 09:33:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1103 transitions. [2022-04-05 09:33:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 09:33:05,742 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:05,742 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] [2022-04-05 09:33:05,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 09:33:05,742 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash -174684695, now seen corresponding path program 1 times [2022-04-05 09:33:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:05,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757819344] [2022-04-05 09:33:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:33:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:05,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:05,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757819344] [2022-04-05 09:33:05,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757819344] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:05,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:05,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480651735] [2022-04-05 09:33:05,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:05,975 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:05,976 INFO L87 Difference]: Start difference. First operand 819 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:33:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:07,602 INFO L93 Difference]: Finished difference Result 877 states and 1175 transitions. [2022-04-05 09:33:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:33:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 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 41 [2022-04-05 09:33:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:07,607 INFO L225 Difference]: With dead ends: 877 [2022-04-05 09:33:07,607 INFO L226 Difference]: Without dead ends: 871 [2022-04-05 09:33:07,608 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 [2022-04-05 09:33:07,608 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 1634 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:07,609 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 885 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-04-05 09:33:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-04-05 09:33:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.3292117465224111) internal successors, (860), 658 states have internal predecessors, (860), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-05 09:33:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1102 transitions. [2022-04-05 09:33:07,666 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1102 transitions. Word has length 41 [2022-04-05 09:33:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:07,666 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1102 transitions. [2022-04-05 09:33:07,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 09:33:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1102 transitions. [2022-04-05 09:33:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-05 09:33:07,667 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:07,668 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] [2022-04-05 09:33:07,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-05 09:33:07,668 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1816872397, now seen corresponding path program 1 times [2022-04-05 09:33:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:07,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188497997] [2022-04-05 09:33:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 09:33:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188497997] [2022-04-05 09:33:07,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188497997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:07,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:07,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193986844] [2022-04-05 09:33:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:07,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:07,832 INFO L87 Difference]: Start difference. First operand 819 states and 1102 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) [2022-04-05 09:33:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:09,039 INFO L93 Difference]: Finished difference Result 882 states and 1180 transitions. [2022-04-05 09:33:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:33:09,040 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 [2022-04-05 09:33:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:09,044 INFO L225 Difference]: With dead ends: 882 [2022-04-05 09:33:09,044 INFO L226 Difference]: Without dead ends: 867 [2022-04-05 09:33:09,045 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 [2022-04-05 09:33:09,045 INFO L913 BasicCegarLoop]: 488 mSDtfsCounter, 671 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:09,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1288 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-04-05 09:33:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2022-04-05 09:33:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 646 states have (on average 1.328173374613003) internal successors, (858), 657 states have internal predecessors, (858), 98 states have call successors, (98), 62 states have call predecessors, (98), 72 states have return successors, (142), 99 states have call predecessors, (142), 90 states have call successors, (142) [2022-04-05 09:33:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1098 transitions. [2022-04-05 09:33:09,102 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1098 transitions. Word has length 42 [2022-04-05 09:33:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:09,102 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1098 transitions. [2022-04-05 09:33:09,102 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) [2022-04-05 09:33:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1098 transitions. [2022-04-05 09:33:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-05 09:33:09,103 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:09,104 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] [2022-04-05 09:33:09,104 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-05 09:33:09,104 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1390592098, now seen corresponding path program 1 times [2022-04-05 09:33:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721901001] [2022-04-05 09:33:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 09:33:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:09,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721901001] [2022-04-05 09:33:09,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721901001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:09,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:09,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:09,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480402862] [2022-04-05 09:33:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:09,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:09,284 INFO L87 Difference]: Start difference. First operand 817 states and 1098 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) [2022-04-05 09:33:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:10,516 INFO L93 Difference]: Finished difference Result 880 states and 1176 transitions. [2022-04-05 09:33:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:33:10,517 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 [2022-04-05 09:33:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:10,521 INFO L225 Difference]: With dead ends: 880 [2022-04-05 09:33:10,521 INFO L226 Difference]: Without dead ends: 860 [2022-04-05 09:33:10,522 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 [2022-04-05 09:33:10,522 INFO L913 BasicCegarLoop]: 475 mSDtfsCounter, 515 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:10,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1300 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-04-05 09:33:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2022-04-05 09:33:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 642 states have (on average 1.3286604361370717) internal successors, (853), 653 states have internal predecessors, (853), 96 states have call successors, (96), 61 states have call predecessors, (96), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-05 09:33:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1089 transitions. [2022-04-05 09:33:10,578 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1089 transitions. Word has length 41 [2022-04-05 09:33:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:10,578 INFO L478 AbstractCegarLoop]: Abstraction has 810 states and 1089 transitions. [2022-04-05 09:33:10,578 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) [2022-04-05 09:33:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1089 transitions. [2022-04-05 09:33:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-05 09:33:10,579 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:10,579 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] [2022-04-05 09:33:10,580 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-05 09:33:10,580 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash -4159802, now seen corresponding path program 1 times [2022-04-05 09:33:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:10,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103788254] [2022-04-05 09:33:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:10,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103788254] [2022-04-05 09:33:10,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103788254] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:10,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:10,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:10,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809059424] [2022-04-05 09:33:10,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:10,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:10,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:10,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:10,738 INFO L87 Difference]: Start difference. First operand 810 states and 1089 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) [2022-04-05 09:33:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:11,921 INFO L93 Difference]: Finished difference Result 857 states and 1144 transitions. [2022-04-05 09:33:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:11,922 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 [2022-04-05 09:33:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:11,926 INFO L225 Difference]: With dead ends: 857 [2022-04-05 09:33:11,926 INFO L226 Difference]: Without dead ends: 835 [2022-04-05 09:33:11,926 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 [2022-04-05 09:33:11,927 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 391 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:11,927 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1012 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-04-05 09:33:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 812. [2022-04-05 09:33:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 644 states have (on average 1.3276397515527951) internal successors, (855), 655 states have internal predecessors, (855), 96 states have call successors, (96), 61 states have call predecessors, (96), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-05 09:33:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1091 transitions. [2022-04-05 09:33:11,983 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1091 transitions. Word has length 42 [2022-04-05 09:33:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:11,983 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1091 transitions. [2022-04-05 09:33:11,983 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) [2022-04-05 09:33:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1091 transitions. [2022-04-05 09:33:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-05 09:33:11,984 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:11,984 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] [2022-04-05 09:33:11,984 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-05 09:33:11,985 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 383655172, now seen corresponding path program 1 times [2022-04-05 09:33:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:11,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938209112] [2022-04-05 09:33:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:12,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 09:33:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:12,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938209112] [2022-04-05 09:33:12,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938209112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:12,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:12,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:33:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215827179] [2022-04-05 09:33:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:12,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:33:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:33:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:33:12,156 INFO L87 Difference]: Start difference. First operand 812 states and 1091 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) [2022-04-05 09:33:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:13,529 INFO L93 Difference]: Finished difference Result 908 states and 1209 transitions. [2022-04-05 09:33:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:13,529 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 [2022-04-05 09:33:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:13,533 INFO L225 Difference]: With dead ends: 908 [2022-04-05 09:33:13,533 INFO L226 Difference]: Without dead ends: 840 [2022-04-05 09:33:13,534 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 [2022-04-05 09:33:13,534 INFO L913 BasicCegarLoop]: 432 mSDtfsCounter, 378 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:13,535 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 914 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-04-05 09:33:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 816. [2022-04-05 09:33:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 647 states have (on average 1.3261205564142196) internal successors, (858), 658 states have internal predecessors, (858), 96 states have call successors, (96), 61 states have call predecessors, (96), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-05 09:33:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-04-05 09:33:13,589 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 44 [2022-04-05 09:33:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:13,589 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-04-05 09:33:13,590 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) [2022-04-05 09:33:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-04-05 09:33:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 09:33:13,591 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:13,591 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] [2022-04-05 09:33:13,591 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-05 09:33:13,591 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash -864015436, now seen corresponding path program 1 times [2022-04-05 09:33:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491396567] [2022-04-05 09:33:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491396567] [2022-04-05 09:33:13,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491396567] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:13,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:13,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214071755] [2022-04-05 09:33:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:13,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:13,762 INFO L87 Difference]: Start difference. First operand 816 states and 1096 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) [2022-04-05 09:33:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:15,065 INFO L93 Difference]: Finished difference Result 860 states and 1147 transitions. [2022-04-05 09:33:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:33:15,065 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 [2022-04-05 09:33:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:15,069 INFO L225 Difference]: With dead ends: 860 [2022-04-05 09:33:15,069 INFO L226 Difference]: Without dead ends: 838 [2022-04-05 09:33:15,069 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:15,070 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 293 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:15,070 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1010 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-04-05 09:33:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 816. [2022-04-05 09:33:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 647 states have (on average 1.3261205564142196) internal successors, (858), 658 states have internal predecessors, (858), 96 states have call successors, (96), 61 states have call predecessors, (96), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-05 09:33:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-04-05 09:33:15,122 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 43 [2022-04-05 09:33:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:15,122 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-04-05 09:33:15,122 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) [2022-04-05 09:33:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-04-05 09:33:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 09:33:15,123 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:15,123 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:15,124 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-05 09:33:15,124 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -392590886, now seen corresponding path program 1 times [2022-04-05 09:33:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:15,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301361365] [2022-04-05 09:33:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:33:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:15,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:15,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301361365] [2022-04-05 09:33:15,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301361365] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143344040] [2022-04-05 09:33:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:15,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:15,299 INFO L87 Difference]: Start difference. First operand 816 states and 1096 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) [2022-04-05 09:33:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:16,334 INFO L93 Difference]: Finished difference Result 861 states and 1149 transitions. [2022-04-05 09:33:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:16,334 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 [2022-04-05 09:33:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:16,337 INFO L225 Difference]: With dead ends: 861 [2022-04-05 09:33:16,337 INFO L226 Difference]: Without dead ends: 843 [2022-04-05 09:33:16,338 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 [2022-04-05 09:33:16,338 INFO L913 BasicCegarLoop]: 457 mSDtfsCounter, 784 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:16,338 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1325 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-04-05 09:33:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 814. [2022-04-05 09:33:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 646 states have (on average 1.325077399380805) internal successors, (856), 657 states have internal predecessors, (856), 95 states have call successors, (95), 61 states have call predecessors, (95), 72 states have return successors, (141), 97 states have call predecessors, (141), 87 states have call successors, (141) [2022-04-05 09:33:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1092 transitions. [2022-04-05 09:33:16,395 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1092 transitions. Word has length 45 [2022-04-05 09:33:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:16,395 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 1092 transitions. [2022-04-05 09:33:16,396 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) [2022-04-05 09:33:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1092 transitions. [2022-04-05 09:33:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 09:33:16,397 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:16,397 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:16,397 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-05 09:33:16,397 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1509958495, now seen corresponding path program 1 times [2022-04-05 09:33:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928033737] [2022-04-05 09:33:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:33:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928033737] [2022-04-05 09:33:16,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928033737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:16,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:16,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848219941] [2022-04-05 09:33:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:16,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:16,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:16,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:16,571 INFO L87 Difference]: Start difference. First operand 814 states and 1092 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) [2022-04-05 09:33:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:17,469 INFO L93 Difference]: Finished difference Result 880 states and 1173 transitions. [2022-04-05 09:33:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:33:17,470 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 [2022-04-05 09:33:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:17,474 INFO L225 Difference]: With dead ends: 880 [2022-04-05 09:33:17,474 INFO L226 Difference]: Without dead ends: 804 [2022-04-05 09:33:17,474 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 [2022-04-05 09:33:17,475 INFO L913 BasicCegarLoop]: 486 mSDtfsCounter, 730 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:17,475 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 878 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-04-05 09:33:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 775. [2022-04-05 09:33:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 616 states have (on average 1.3246753246753247) internal successors, (816), 628 states have internal predecessors, (816), 93 states have call successors, (93), 60 states have call predecessors, (93), 65 states have return successors, (132), 88 states have call predecessors, (132), 85 states have call successors, (132) [2022-04-05 09:33:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1041 transitions. [2022-04-05 09:33:17,529 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1041 transitions. Word has length 46 [2022-04-05 09:33:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:17,530 INFO L478 AbstractCegarLoop]: Abstraction has 775 states and 1041 transitions. [2022-04-05 09:33:17,530 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) [2022-04-05 09:33:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1041 transitions. [2022-04-05 09:33:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 09:33:17,531 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:17,531 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:17,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-05 09:33:17,531 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash -214129706, now seen corresponding path program 1 times [2022-04-05 09:33:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:17,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474787663] [2022-04-05 09:33:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 09:33:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:17,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474787663] [2022-04-05 09:33:17,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474787663] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:17,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:17,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-05 09:33:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551364707] [2022-04-05 09:33:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:17,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 09:33:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 09:33:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-05 09:33:17,664 INFO L87 Difference]: Start difference. First operand 775 states and 1041 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) [2022-04-05 09:33:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:18,767 INFO L93 Difference]: Finished difference Result 1134 states and 1535 transitions. [2022-04-05 09:33:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:18,771 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 [2022-04-05 09:33:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:18,776 INFO L225 Difference]: With dead ends: 1134 [2022-04-05 09:33:18,776 INFO L226 Difference]: Without dead ends: 1131 [2022-04-05 09:33:18,777 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 [2022-04-05 09:33:18,778 INFO L913 BasicCegarLoop]: 533 mSDtfsCounter, 583 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:18,778 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 782 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-04-05 09:33:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 888. [2022-04-05 09:33:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 707 states have (on average 1.3295615275813295) internal successors, (940), 721 states have internal predecessors, (940), 103 states have call successors, (103), 70 states have call predecessors, (103), 77 states have return successors, (152), 98 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-05 09:33:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1195 transitions. [2022-04-05 09:33:18,844 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1195 transitions. Word has length 47 [2022-04-05 09:33:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:18,844 INFO L478 AbstractCegarLoop]: Abstraction has 888 states and 1195 transitions. [2022-04-05 09:33:18,844 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) [2022-04-05 09:33:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1195 transitions. [2022-04-05 09:33:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 09:33:18,845 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:18,845 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:18,845 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-05 09:33:18,846 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 530917733, now seen corresponding path program 1 times [2022-04-05 09:33:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706043313] [2022-04-05 09:33:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:33:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:19,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:19,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706043313] [2022-04-05 09:33:19,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706043313] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:19,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:19,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962590490] [2022-04-05 09:33:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:19,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:19,019 INFO L87 Difference]: Start difference. First operand 888 states and 1195 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) [2022-04-05 09:33:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:20,368 INFO L93 Difference]: Finished difference Result 933 states and 1248 transitions. [2022-04-05 09:33:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 09:33:20,369 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 [2022-04-05 09:33:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:20,371 INFO L225 Difference]: With dead ends: 933 [2022-04-05 09:33:20,372 INFO L226 Difference]: Without dead ends: 915 [2022-04-05 09:33:20,372 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 [2022-04-05 09:33:20,373 INFO L913 BasicCegarLoop]: 448 mSDtfsCounter, 308 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:20,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1260 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-04-05 09:33:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 886. [2022-04-05 09:33:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 706 states have (on average 1.3286118980169972) internal successors, (938), 720 states have internal predecessors, (938), 102 states have call successors, (102), 70 states have call predecessors, (102), 77 states have return successors, (151), 97 states have call predecessors, (151), 94 states have call successors, (151) [2022-04-05 09:33:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1191 transitions. [2022-04-05 09:33:20,437 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1191 transitions. Word has length 47 [2022-04-05 09:33:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:20,438 INFO L478 AbstractCegarLoop]: Abstraction has 886 states and 1191 transitions. [2022-04-05 09:33:20,438 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) [2022-04-05 09:33:20,438 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1191 transitions. [2022-04-05 09:33:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-05 09:33:20,439 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:20,439 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] [2022-04-05 09:33:20,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-05 09:33:20,439 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:20,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:20,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1920468263, now seen corresponding path program 1 times [2022-04-05 09:33:20,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:20,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600214685] [2022-04-05 09:33:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 09:33:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:20,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600214685] [2022-04-05 09:33:20,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600214685] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:20,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:20,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705548323] [2022-04-05 09:33:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:20,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:20,642 INFO L87 Difference]: Start difference. First operand 886 states and 1191 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) [2022-04-05 09:33:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:22,225 INFO L93 Difference]: Finished difference Result 1483 states and 1950 transitions. [2022-04-05 09:33:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:22,226 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 [2022-04-05 09:33:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:22,228 INFO L225 Difference]: With dead ends: 1483 [2022-04-05 09:33:22,229 INFO L226 Difference]: Without dead ends: 936 [2022-04-05 09:33:22,230 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 [2022-04-05 09:33:22,230 INFO L913 BasicCegarLoop]: 556 mSDtfsCounter, 1843 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:22,230 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 779 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-05 09:33:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 877. [2022-04-05 09:33:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 697 states have (on average 1.3156384505021521) internal successors, (917), 711 states have internal predecessors, (917), 102 states have call successors, (102), 70 states have call predecessors, (102), 77 states have return successors, (151), 97 states have call predecessors, (151), 94 states have call successors, (151) [2022-04-05 09:33:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2022-04-05 09:33:22,301 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 48 [2022-04-05 09:33:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:22,301 INFO L478 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2022-04-05 09:33:22,301 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) [2022-04-05 09:33:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2022-04-05 09:33:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:33:22,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:22,302 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] [2022-04-05 09:33:22,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-05 09:33:22,303 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1683726876, now seen corresponding path program 1 times [2022-04-05 09:33:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:22,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135671908] [2022-04-05 09:33:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:22,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135671908] [2022-04-05 09:33:22,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135671908] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:22,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:22,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:22,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332265469] [2022-04-05 09:33:22,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:22,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:22,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:22,509 INFO L87 Difference]: Start difference. First operand 877 states and 1170 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) [2022-04-05 09:33:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:24,047 INFO L93 Difference]: Finished difference Result 1151 states and 1528 transitions. [2022-04-05 09:33:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 09:33:24,047 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 [2022-04-05 09:33:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:24,052 INFO L225 Difference]: With dead ends: 1151 [2022-04-05 09:33:24,052 INFO L226 Difference]: Without dead ends: 1075 [2022-04-05 09:33:24,053 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-04-05 09:33:24,055 INFO L913 BasicCegarLoop]: 545 mSDtfsCounter, 1640 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:24,055 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 1333 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-04-05 09:33:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 932. [2022-04-05 09:33:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 741 states have (on average 1.3090418353576248) internal successors, (970), 757 states have internal predecessors, (970), 105 states have call successors, (105), 71 states have call predecessors, (105), 85 states have return successors, (168), 104 states have call predecessors, (168), 97 states have call successors, (168) [2022-04-05 09:33:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1243 transitions. [2022-04-05 09:33:24,130 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1243 transitions. Word has length 50 [2022-04-05 09:33:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:24,131 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1243 transitions. [2022-04-05 09:33:24,131 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) [2022-04-05 09:33:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1243 transitions. [2022-04-05 09:33:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 09:33:24,132 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:24,132 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] [2022-04-05 09:33:24,132 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-05 09:33:24,132 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -415030459, now seen corresponding path program 1 times [2022-04-05 09:33:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236863675] [2022-04-05 09:33:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:33:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236863675] [2022-04-05 09:33:24,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236863675] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:24,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:24,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:33:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486338764] [2022-04-05 09:33:24,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:24,325 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:33:24,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:33:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:33:24,325 INFO L87 Difference]: Start difference. First operand 932 states and 1243 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) [2022-04-05 09:33:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:25,410 INFO L93 Difference]: Finished difference Result 979 states and 1296 transitions. [2022-04-05 09:33:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:25,410 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 [2022-04-05 09:33:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:25,414 INFO L225 Difference]: With dead ends: 979 [2022-04-05 09:33:25,414 INFO L226 Difference]: Without dead ends: 959 [2022-04-05 09:33:25,415 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 [2022-04-05 09:33:25,415 INFO L913 BasicCegarLoop]: 452 mSDtfsCounter, 620 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:25,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1521 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-05 09:33:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 932. [2022-04-05 09:33:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 741 states have (on average 1.2928475033738192) internal successors, (958), 757 states have internal predecessors, (958), 105 states have call successors, (105), 71 states have call predecessors, (105), 85 states have return successors, (168), 104 states have call predecessors, (168), 97 states have call successors, (168) [2022-04-05 09:33:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1231 transitions. [2022-04-05 09:33:25,488 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1231 transitions. Word has length 50 [2022-04-05 09:33:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:25,488 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1231 transitions. [2022-04-05 09:33:25,488 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) [2022-04-05 09:33:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1231 transitions. [2022-04-05 09:33:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:33:25,490 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:25,490 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] [2022-04-05 09:33:25,490 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-05 09:33:25,490 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash 527542300, now seen corresponding path program 1 times [2022-04-05 09:33:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:25,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679603928] [2022-04-05 09:33:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:25,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 09:33:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679603928] [2022-04-05 09:33:25,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679603928] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:25,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:25,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131034252] [2022-04-05 09:33:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:25,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:25,628 INFO L87 Difference]: Start difference. First operand 932 states and 1231 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) [2022-04-05 09:33:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:26,653 INFO L93 Difference]: Finished difference Result 1041 states and 1345 transitions. [2022-04-05 09:33:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:33:26,653 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 [2022-04-05 09:33:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:26,655 INFO L225 Difference]: With dead ends: 1041 [2022-04-05 09:33:26,655 INFO L226 Difference]: Without dead ends: 685 [2022-04-05 09:33:26,656 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 [2022-04-05 09:33:26,657 INFO L913 BasicCegarLoop]: 470 mSDtfsCounter, 747 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:26,657 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 814 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:26,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-04-05 09:33:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 623. [2022-04-05 09:33:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 498 states have (on average 1.2751004016064258) internal successors, (635), 509 states have internal predecessors, (635), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 68 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-05 09:33:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 791 transitions. [2022-04-05 09:33:26,708 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 791 transitions. Word has length 52 [2022-04-05 09:33:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:26,708 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 791 transitions. [2022-04-05 09:33:26,708 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) [2022-04-05 09:33:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 791 transitions. [2022-04-05 09:33:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:33:26,709 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:26,709 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] [2022-04-05 09:33:26,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-05 09:33:26,709 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 868088371, now seen corresponding path program 1 times [2022-04-05 09:33:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:26,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967555444] [2022-04-05 09:33:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967555444] [2022-04-05 09:33:26,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967555444] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:26,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:26,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:33:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744432697] [2022-04-05 09:33:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:26,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:33:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:33:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:33:26,895 INFO L87 Difference]: Start difference. First operand 623 states and 791 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) [2022-04-05 09:33:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:27,996 INFO L93 Difference]: Finished difference Result 673 states and 848 transitions. [2022-04-05 09:33:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:27,997 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 [2022-04-05 09:33:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:27,999 INFO L225 Difference]: With dead ends: 673 [2022-04-05 09:33:28,000 INFO L226 Difference]: Without dead ends: 645 [2022-04-05 09:33:28,000 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 [2022-04-05 09:33:28,001 INFO L913 BasicCegarLoop]: 439 mSDtfsCounter, 725 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:28,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1492 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-04-05 09:33:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 613. [2022-04-05 09:33:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 488 states have (on average 1.2704918032786885) internal successors, (620), 499 states have internal predecessors, (620), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 68 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-05 09:33:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 776 transitions. [2022-04-05 09:33:28,057 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 776 transitions. Word has length 51 [2022-04-05 09:33:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:28,057 INFO L478 AbstractCegarLoop]: Abstraction has 613 states and 776 transitions. [2022-04-05 09:33:28,058 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) [2022-04-05 09:33:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 776 transitions. [2022-04-05 09:33:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-05 09:33:28,059 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:28,059 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] [2022-04-05 09:33:28,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-05 09:33:28,059 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1730699339, now seen corresponding path program 1 times [2022-04-05 09:33:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:28,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284908720] [2022-04-05 09:33:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:28,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:28,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284908720] [2022-04-05 09:33:28,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284908720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:28,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:28,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:33:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966036007] [2022-04-05 09:33:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:28,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:33:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:33:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:33:28,252 INFO L87 Difference]: Start difference. First operand 613 states and 776 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) [2022-04-05 09:33:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:29,542 INFO L93 Difference]: Finished difference Result 669 states and 843 transitions. [2022-04-05 09:33:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:33:29,542 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 [2022-04-05 09:33:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:29,544 INFO L225 Difference]: With dead ends: 669 [2022-04-05 09:33:29,544 INFO L226 Difference]: Without dead ends: 647 [2022-04-05 09:33:29,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:33:29,545 INFO L913 BasicCegarLoop]: 400 mSDtfsCounter, 418 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:29,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1022 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-04-05 09:33:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 616. [2022-04-05 09:33:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 491 states have (on average 1.2688391038696538) internal successors, (623), 501 states have internal predecessors, (623), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-05 09:33:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 779 transitions. [2022-04-05 09:33:29,592 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 779 transitions. Word has length 51 [2022-04-05 09:33:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:29,592 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 779 transitions. [2022-04-05 09:33:29,592 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) [2022-04-05 09:33:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 779 transitions. [2022-04-05 09:33:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:33:29,593 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:29,593 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] [2022-04-05 09:33:29,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-05 09:33:29,593 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash -585236833, now seen corresponding path program 1 times [2022-04-05 09:33:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:29,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983104183] [2022-04-05 09:33:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:29,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983104183] [2022-04-05 09:33:29,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983104183] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:29,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:29,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790630407] [2022-04-05 09:33:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:29,775 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:29,776 INFO L87 Difference]: Start difference. First operand 616 states and 779 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) [2022-04-05 09:33:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:30,665 INFO L93 Difference]: Finished difference Result 1050 states and 1349 transitions. [2022-04-05 09:33:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 09:33:30,666 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 [2022-04-05 09:33:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:30,668 INFO L225 Difference]: With dead ends: 1050 [2022-04-05 09:33:30,668 INFO L226 Difference]: Without dead ends: 676 [2022-04-05 09:33:30,669 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:33:30,670 INFO L913 BasicCegarLoop]: 397 mSDtfsCounter, 1298 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:30,670 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 740 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:33:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-04-05 09:33:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 627. [2022-04-05 09:33:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 502 states have (on average 1.2729083665338645) internal successors, (639), 512 states have internal predecessors, (639), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-05 09:33:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 795 transitions. [2022-04-05 09:33:30,725 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 795 transitions. Word has length 52 [2022-04-05 09:33:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:30,726 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 795 transitions. [2022-04-05 09:33:30,726 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) [2022-04-05 09:33:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 795 transitions. [2022-04-05 09:33:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:33:30,727 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:30,727 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] [2022-04-05 09:33:30,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-05 09:33:30,727 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 768072864, now seen corresponding path program 1 times [2022-04-05 09:33:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193512098] [2022-04-05 09:33:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193512098] [2022-04-05 09:33:30,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193512098] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:30,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:30,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:33:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434510003] [2022-04-05 09:33:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:30,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:33:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:33:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:30,928 INFO L87 Difference]: Start difference. First operand 627 states and 795 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) [2022-04-05 09:33:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:32,723 INFO L93 Difference]: Finished difference Result 749 states and 943 transitions. [2022-04-05 09:33:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:33:32,723 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 [2022-04-05 09:33:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:32,726 INFO L225 Difference]: With dead ends: 749 [2022-04-05 09:33:32,726 INFO L226 Difference]: Without dead ends: 670 [2022-04-05 09:33:32,726 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 [2022-04-05 09:33:32,727 INFO L913 BasicCegarLoop]: 399 mSDtfsCounter, 653 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:32,727 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1221 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 09:33:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-04-05 09:33:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 620. [2022-04-05 09:33:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 495 states have (on average 1.2686868686868686) internal successors, (628), 505 states have internal predecessors, (628), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-05 09:33:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 784 transitions. [2022-04-05 09:33:32,778 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 784 transitions. Word has length 52 [2022-04-05 09:33:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:32,778 INFO L478 AbstractCegarLoop]: Abstraction has 620 states and 784 transitions. [2022-04-05 09:33:32,779 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) [2022-04-05 09:33:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 784 transitions. [2022-04-05 09:33:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:33:32,780 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:32,780 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] [2022-04-05 09:33:32,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-05 09:33:32,780 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1124310208, now seen corresponding path program 1 times [2022-04-05 09:33:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:32,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251638630] [2022-04-05 09:33:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:32,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:32,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251638630] [2022-04-05 09:33:32,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251638630] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:32,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:32,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:32,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473038629] [2022-04-05 09:33:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:32,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:32,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:32,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:32,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:32,942 INFO L87 Difference]: Start difference. First operand 620 states and 784 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) [2022-04-05 09:33:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:34,283 INFO L93 Difference]: Finished difference Result 815 states and 1051 transitions. [2022-04-05 09:33:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:34,284 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 [2022-04-05 09:33:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:34,286 INFO L225 Difference]: With dead ends: 815 [2022-04-05 09:33:34,286 INFO L226 Difference]: Without dead ends: 738 [2022-04-05 09:33:34,286 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:34,287 INFO L913 BasicCegarLoop]: 556 mSDtfsCounter, 450 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:34,287 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1030 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-04-05 09:33:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 575. [2022-04-05 09:33:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 455 states have (on average 1.2747252747252746) internal successors, (580), 465 states have internal predecessors, (580), 69 states have call successors, (69), 44 states have call predecessors, (69), 50 states have return successors, (82), 66 states have call predecessors, (82), 61 states have call successors, (82) [2022-04-05 09:33:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 731 transitions. [2022-04-05 09:33:34,345 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 731 transitions. Word has length 52 [2022-04-05 09:33:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:34,346 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 731 transitions. [2022-04-05 09:33:34,346 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) [2022-04-05 09:33:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 731 transitions. [2022-04-05 09:33:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 09:33:34,347 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:34,347 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:34,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-05 09:33:34,347 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:34,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash 525399217, now seen corresponding path program 1 times [2022-04-05 09:33:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:34,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603782237] [2022-04-05 09:33:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:34,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603782237] [2022-04-05 09:33:34,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603782237] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:34,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:34,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:33:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173899419] [2022-04-05 09:33:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:34,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:33:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:33:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:34,552 INFO L87 Difference]: Start difference. First operand 575 states and 731 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) [2022-04-05 09:33:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:35,691 INFO L93 Difference]: Finished difference Result 638 states and 818 transitions. [2022-04-05 09:33:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:33:35,692 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 [2022-04-05 09:33:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:35,694 INFO L225 Difference]: With dead ends: 638 [2022-04-05 09:33:35,694 INFO L226 Difference]: Without dead ends: 634 [2022-04-05 09:33:35,694 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 [2022-04-05 09:33:35,695 INFO L913 BasicCegarLoop]: 410 mSDtfsCounter, 520 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:35,695 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1704 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-04-05 09:33:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 592. [2022-04-05 09:33:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 470 states have (on average 1.2659574468085106) internal successors, (595), 480 states have internal predecessors, (595), 69 states have call successors, (69), 44 states have call predecessors, (69), 52 states have return successors, (91), 68 states have call predecessors, (91), 61 states have call successors, (91) [2022-04-05 09:33:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 755 transitions. [2022-04-05 09:33:35,743 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 755 transitions. Word has length 53 [2022-04-05 09:33:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:35,743 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 755 transitions. [2022-04-05 09:33:35,743 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) [2022-04-05 09:33:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 755 transitions. [2022-04-05 09:33:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 09:33:35,744 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:35,744 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:35,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-05 09:33:35,745 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash 525430961, now seen corresponding path program 1 times [2022-04-05 09:33:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:35,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698290353] [2022-04-05 09:33:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:35,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698290353] [2022-04-05 09:33:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698290353] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:35,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:35,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:33:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161484355] [2022-04-05 09:33:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:35,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:33:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:33:35,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:35,946 INFO L87 Difference]: Start difference. First operand 592 states and 755 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) [2022-04-05 09:33:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:36,972 INFO L93 Difference]: Finished difference Result 626 states and 794 transitions. [2022-04-05 09:33:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:36,973 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 [2022-04-05 09:33:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:36,975 INFO L225 Difference]: With dead ends: 626 [2022-04-05 09:33:36,975 INFO L226 Difference]: Without dead ends: 611 [2022-04-05 09:33:36,975 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 [2022-04-05 09:33:36,975 INFO L913 BasicCegarLoop]: 414 mSDtfsCounter, 559 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:36,976 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1621 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-04-05 09:33:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 589. [2022-04-05 09:33:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 467 states have (on average 1.2676659528907923) internal successors, (592), 478 states have internal predecessors, (592), 69 states have call successors, (69), 44 states have call predecessors, (69), 52 states have return successors, (90), 67 states have call predecessors, (90), 61 states have call successors, (90) [2022-04-05 09:33:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 751 transitions. [2022-04-05 09:33:37,036 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 751 transitions. Word has length 53 [2022-04-05 09:33:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:37,036 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 751 transitions. [2022-04-05 09:33:37,037 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) [2022-04-05 09:33:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 751 transitions. [2022-04-05 09:33:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 09:33:37,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:37,038 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] [2022-04-05 09:33:37,038 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-05 09:33:37,038 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1791629129, now seen corresponding path program 1 times [2022-04-05 09:33:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:37,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587491871] [2022-04-05 09:33:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:37,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:33:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-05 09:33:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:37,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:37,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587491871] [2022-04-05 09:33:37,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587491871] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:37,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:37,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315401839] [2022-04-05 09:33:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:37,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:37,263 INFO L87 Difference]: Start difference. First operand 589 states and 751 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) [2022-04-05 09:33:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:38,334 INFO L93 Difference]: Finished difference Result 624 states and 790 transitions. [2022-04-05 09:33:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:33:38,335 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 [2022-04-05 09:33:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:38,336 INFO L225 Difference]: With dead ends: 624 [2022-04-05 09:33:38,337 INFO L226 Difference]: Without dead ends: 596 [2022-04-05 09:33:38,337 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:33:38,337 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 604 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:38,338 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1652 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-04-05 09:33:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 577. [2022-04-05 09:33:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 458 states have (on average 1.2663755458515285) internal successors, (580), 469 states have internal predecessors, (580), 67 states have call successors, (67), 43 states have call predecessors, (67), 51 states have return successors, (88), 65 states have call predecessors, (88), 59 states have call successors, (88) [2022-04-05 09:33:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 735 transitions. [2022-04-05 09:33:38,387 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 735 transitions. Word has length 55 [2022-04-05 09:33:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:38,387 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 735 transitions. [2022-04-05 09:33:38,387 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) [2022-04-05 09:33:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 735 transitions. [2022-04-05 09:33:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 09:33:38,388 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:38,389 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] [2022-04-05 09:33:38,389 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-05 09:33:38,389 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash 310114016, now seen corresponding path program 1 times [2022-04-05 09:33:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629675983] [2022-04-05 09:33:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629675983] [2022-04-05 09:33:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629675983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:38,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:38,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430925649] [2022-04-05 09:33:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:38,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:38,576 INFO L87 Difference]: Start difference. First operand 577 states and 735 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) [2022-04-05 09:33:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:39,720 INFO L93 Difference]: Finished difference Result 746 states and 969 transitions. [2022-04-05 09:33:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:33:39,721 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 [2022-04-05 09:33:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:39,723 INFO L225 Difference]: With dead ends: 746 [2022-04-05 09:33:39,723 INFO L226 Difference]: Without dead ends: 728 [2022-04-05 09:33:39,723 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 [2022-04-05 09:33:39,724 INFO L913 BasicCegarLoop]: 503 mSDtfsCounter, 1355 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:39,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 892 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:33:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-04-05 09:33:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 561. [2022-04-05 09:33:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.2719101123595506) internal successors, (566), 455 states have internal predecessors, (566), 66 states have call successors, (66), 43 states have call predecessors, (66), 49 states have return successors, (79), 63 states have call predecessors, (79), 58 states have call successors, (79) [2022-04-05 09:33:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 711 transitions. [2022-04-05 09:33:39,773 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 711 transitions. Word has length 54 [2022-04-05 09:33:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:39,773 INFO L478 AbstractCegarLoop]: Abstraction has 561 states and 711 transitions. [2022-04-05 09:33:39,773 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) [2022-04-05 09:33:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 711 transitions. [2022-04-05 09:33:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 09:33:39,774 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:39,774 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] [2022-04-05 09:33:39,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-05 09:33:39,774 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1381037997, now seen corresponding path program 1 times [2022-04-05 09:33:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108731391] [2022-04-05 09:33:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:39,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 09:33:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 09:33:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:39,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108731391] [2022-04-05 09:33:39,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108731391] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:39,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:39,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 09:33:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389831445] [2022-04-05 09:33:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:39,922 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 09:33:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 09:33:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-05 09:33:39,922 INFO L87 Difference]: Start difference. First operand 561 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:33:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:40,718 INFO L93 Difference]: Finished difference Result 898 states and 1149 transitions. [2022-04-05 09:33:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:33:40,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-04-05 09:33:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:40,721 INFO L225 Difference]: With dead ends: 898 [2022-04-05 09:33:40,721 INFO L226 Difference]: Without dead ends: 589 [2022-04-05 09:33:40,721 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:40,722 INFO L913 BasicCegarLoop]: 386 mSDtfsCounter, 436 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:40,722 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 800 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:33:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-04-05 09:33:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 566. [2022-04-05 09:33:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 449 states have (on average 1.265033407572383) internal successors, (568), 460 states have internal predecessors, (568), 66 states have call successors, (66), 43 states have call predecessors, (66), 50 states have return successors, (83), 63 states have call predecessors, (83), 58 states have call successors, (83) [2022-04-05 09:33:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 717 transitions. [2022-04-05 09:33:40,786 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 717 transitions. Word has length 61 [2022-04-05 09:33:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:40,787 INFO L478 AbstractCegarLoop]: Abstraction has 566 states and 717 transitions. [2022-04-05 09:33:40,787 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-05 09:33:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 717 transitions. [2022-04-05 09:33:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 09:33:40,788 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:40,788 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:40,788 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-05 09:33:40,789 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1616264812, now seen corresponding path program 1 times [2022-04-05 09:33:40,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:40,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559717473] [2022-04-05 09:33:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:40,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 09:33:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:33:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559717473] [2022-04-05 09:33:41,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559717473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:41,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:41,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685245619] [2022-04-05 09:33:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:41,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:41,019 INFO L87 Difference]: Start difference. First operand 566 states and 717 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) [2022-04-05 09:33:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:41,873 INFO L93 Difference]: Finished difference Result 852 states and 1088 transitions. [2022-04-05 09:33:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:41,873 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 [2022-04-05 09:33:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:41,875 INFO L225 Difference]: With dead ends: 852 [2022-04-05 09:33:41,875 INFO L226 Difference]: Without dead ends: 538 [2022-04-05 09:33:41,876 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:41,876 INFO L913 BasicCegarLoop]: 388 mSDtfsCounter, 775 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:41,877 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1072 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-04-05 09:33:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 511. [2022-04-05 09:33:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 402 states have (on average 1.2537313432835822) internal successors, (504), 410 states have internal predecessors, (504), 63 states have call successors, (63), 42 states have call predecessors, (63), 45 states have return successors, (72), 59 states have call predecessors, (72), 56 states have call successors, (72) [2022-04-05 09:33:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2022-04-05 09:33:41,949 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 64 [2022-04-05 09:33:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:41,949 INFO L478 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2022-04-05 09:33:41,949 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) [2022-04-05 09:33:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2022-04-05 09:33:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-05 09:33:41,950 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:41,950 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] [2022-04-05 09:33:41,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-05 09:33:41,951 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1336270132, now seen corresponding path program 1 times [2022-04-05 09:33:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763607839] [2022-04-05 09:33:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:33:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763607839] [2022-04-05 09:33:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763607839] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:42,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:42,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620345813] [2022-04-05 09:33:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:42,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:42,152 INFO L87 Difference]: Start difference. First operand 511 states and 639 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) [2022-04-05 09:33:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:43,489 INFO L93 Difference]: Finished difference Result 545 states and 678 transitions. [2022-04-05 09:33:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:33:43,489 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 [2022-04-05 09:33:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:43,491 INFO L225 Difference]: With dead ends: 545 [2022-04-05 09:33:43,491 INFO L226 Difference]: Without dead ends: 524 [2022-04-05 09:33:43,492 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:33:43,492 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 518 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:43,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1064 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 09:33:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-05 09:33:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 508. [2022-04-05 09:33:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 399 states have (on average 1.255639097744361) internal successors, (501), 408 states have internal predecessors, (501), 63 states have call successors, (63), 42 states have call predecessors, (63), 45 states have return successors, (71), 58 states have call predecessors, (71), 56 states have call successors, (71) [2022-04-05 09:33:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 635 transitions. [2022-04-05 09:33:43,555 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 635 transitions. Word has length 59 [2022-04-05 09:33:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:43,555 INFO L478 AbstractCegarLoop]: Abstraction has 508 states and 635 transitions. [2022-04-05 09:33:43,555 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) [2022-04-05 09:33:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 635 transitions. [2022-04-05 09:33:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 09:33:43,556 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:43,556 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:43,556 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-05 09:33:43,556 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1613674778, now seen corresponding path program 1 times [2022-04-05 09:33:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359557152] [2022-04-05 09:33:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 09:33:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359557152] [2022-04-05 09:33:43,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359557152] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:43,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:43,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:33:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471971379] [2022-04-05 09:33:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:43,730 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:33:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:33:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:43,730 INFO L87 Difference]: Start difference. First operand 508 states and 635 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) [2022-04-05 09:33:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:44,631 INFO L93 Difference]: Finished difference Result 538 states and 669 transitions. [2022-04-05 09:33:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:33:44,631 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 [2022-04-05 09:33:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:44,633 INFO L225 Difference]: With dead ends: 538 [2022-04-05 09:33:44,633 INFO L226 Difference]: Without dead ends: 520 [2022-04-05 09:33:44,633 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:44,634 INFO L913 BasicCegarLoop]: 391 mSDtfsCounter, 487 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:44,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1502 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-04-05 09:33:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 504. [2022-04-05 09:33:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 396 states have (on average 1.255050505050505) internal successors, (497), 405 states have internal predecessors, (497), 62 states have call successors, (62), 42 states have call predecessors, (62), 45 states have return successors, (70), 57 states have call predecessors, (70), 55 states have call successors, (70) [2022-04-05 09:33:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 629 transitions. [2022-04-05 09:33:44,692 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 629 transitions. Word has length 58 [2022-04-05 09:33:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:44,693 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 629 transitions. [2022-04-05 09:33:44,693 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) [2022-04-05 09:33:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 629 transitions. [2022-04-05 09:33:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 09:33:44,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:44,694 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] [2022-04-05 09:33:44,694 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-05 09:33:44,694 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2114727091, now seen corresponding path program 1 times [2022-04-05 09:33:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590166143] [2022-04-05 09:33:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:33:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 09:33:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:44,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:44,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590166143] [2022-04-05 09:33:44,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590166143] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:44,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:44,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423442515] [2022-04-05 09:33:44,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:44,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:44,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:44,874 INFO L87 Difference]: Start difference. First operand 504 states and 629 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) [2022-04-05 09:33:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:46,032 INFO L93 Difference]: Finished difference Result 539 states and 669 transitions. [2022-04-05 09:33:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:46,032 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 [2022-04-05 09:33:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:46,034 INFO L225 Difference]: With dead ends: 539 [2022-04-05 09:33:46,034 INFO L226 Difference]: Without dead ends: 515 [2022-04-05 09:33:46,035 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:33:46,035 INFO L913 BasicCegarLoop]: 362 mSDtfsCounter, 453 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:46,035 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 913 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-04-05 09:33:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 499. [2022-04-05 09:33:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 393 states have (on average 1.251908396946565) internal successors, (492), 401 states have internal predecessors, (492), 61 states have call successors, (61), 42 states have call predecessors, (61), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-05 09:33:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 621 transitions. [2022-04-05 09:33:46,076 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 621 transitions. Word has length 60 [2022-04-05 09:33:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:46,076 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 621 transitions. [2022-04-05 09:33:46,076 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) [2022-04-05 09:33:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 621 transitions. [2022-04-05 09:33:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 09:33:46,077 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:46,077 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] [2022-04-05 09:33:46,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-05 09:33:46,077 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1861314870, now seen corresponding path program 1 times [2022-04-05 09:33:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:46,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711688371] [2022-04-05 09:33:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 09:33:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:33:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:33:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:46,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711688371] [2022-04-05 09:33:46,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711688371] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:46,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:46,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898109788] [2022-04-05 09:33:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:46,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:46,265 INFO L87 Difference]: Start difference. First operand 499 states and 621 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) [2022-04-05 09:33:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:47,185 INFO L93 Difference]: Finished difference Result 780 states and 980 transitions. [2022-04-05 09:33:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:33:47,185 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 [2022-04-05 09:33:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:47,187 INFO L225 Difference]: With dead ends: 780 [2022-04-05 09:33:47,187 INFO L226 Difference]: Without dead ends: 521 [2022-04-05 09:33:47,188 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 [2022-04-05 09:33:47,188 INFO L913 BasicCegarLoop]: 357 mSDtfsCounter, 745 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:47,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1040 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:33:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-04-05 09:33:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 499. [2022-04-05 09:33:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 393 states have (on average 1.2468193384223918) internal successors, (490), 401 states have internal predecessors, (490), 61 states have call successors, (61), 42 states have call predecessors, (61), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-05 09:33:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 619 transitions. [2022-04-05 09:33:47,231 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 619 transitions. Word has length 68 [2022-04-05 09:33:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:47,231 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 619 transitions. [2022-04-05 09:33:47,232 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) [2022-04-05 09:33:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 619 transitions. [2022-04-05 09:33:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:33:47,233 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:47,233 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] [2022-04-05 09:33:47,233 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-05 09:33:47,233 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1116193296, now seen corresponding path program 1 times [2022-04-05 09:33:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:47,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649542271] [2022-04-05 09:33:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:33:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:47,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:47,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649542271] [2022-04-05 09:33:47,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649542271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:47,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:47,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 09:33:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508086063] [2022-04-05 09:33:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:47,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 09:33:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:47,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 09:33:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-05 09:33:47,413 INFO L87 Difference]: Start difference. First operand 499 states and 619 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) [2022-04-05 09:33:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:48,394 INFO L93 Difference]: Finished difference Result 611 states and 749 transitions. [2022-04-05 09:33:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 09:33:48,394 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 [2022-04-05 09:33:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:48,396 INFO L225 Difference]: With dead ends: 611 [2022-04-05 09:33:48,397 INFO L226 Difference]: Without dead ends: 519 [2022-04-05 09:33:48,397 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 [2022-04-05 09:33:48,397 INFO L913 BasicCegarLoop]: 359 mSDtfsCounter, 501 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:48,398 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 812 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-04-05 09:33:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 503. [2022-04-05 09:33:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 396 states have (on average 1.244949494949495) internal successors, (493), 404 states have internal predecessors, (493), 61 states have call successors, (61), 42 states have call predecessors, (61), 45 states have return successors, (69), 57 states have call predecessors, (69), 54 states have call successors, (69) [2022-04-05 09:33:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 623 transitions. [2022-04-05 09:33:48,438 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 623 transitions. Word has length 63 [2022-04-05 09:33:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:48,438 INFO L478 AbstractCegarLoop]: Abstraction has 503 states and 623 transitions. [2022-04-05 09:33:48,438 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) [2022-04-05 09:33:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 623 transitions. [2022-04-05 09:33:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:33:48,439 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:48,439 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] [2022-04-05 09:33:48,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-05 09:33:48,439 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash -929996240, now seen corresponding path program 1 times [2022-04-05 09:33:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:48,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095214087] [2022-04-05 09:33:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:33:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:48,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095214087] [2022-04-05 09:33:48,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095214087] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:48,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:48,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383182474] [2022-04-05 09:33:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:48,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:48,642 INFO L87 Difference]: Start difference. First operand 503 states and 623 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) [2022-04-05 09:33:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:49,841 INFO L93 Difference]: Finished difference Result 529 states and 653 transitions. [2022-04-05 09:33:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:49,843 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 [2022-04-05 09:33:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:49,846 INFO L225 Difference]: With dead ends: 529 [2022-04-05 09:33:49,846 INFO L226 Difference]: Without dead ends: 505 [2022-04-05 09:33:49,846 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 [2022-04-05 09:33:49,846 INFO L913 BasicCegarLoop]: 352 mSDtfsCounter, 502 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:49,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 991 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-05 09:33:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 489. [2022-04-05 09:33:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.2395833333333333) internal successors, (476), 391 states have internal predecessors, (476), 60 states have call successors, (60), 42 states have call predecessors, (60), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-05 09:33:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 604 transitions. [2022-04-05 09:33:49,894 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 604 transitions. Word has length 63 [2022-04-05 09:33:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:49,894 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 604 transitions. [2022-04-05 09:33:49,894 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) [2022-04-05 09:33:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 604 transitions. [2022-04-05 09:33:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:33:49,895 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:49,895 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] [2022-04-05 09:33:49,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-05 09:33:49,896 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1704717596, now seen corresponding path program 1 times [2022-04-05 09:33:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:49,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406111231] [2022-04-05 09:33:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 09:33:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:33:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:33:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:50,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406111231] [2022-04-05 09:33:50,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406111231] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:50,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:50,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 09:33:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394091063] [2022-04-05 09:33:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:50,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 09:33:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 09:33:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-05 09:33:50,103 INFO L87 Difference]: Start difference. First operand 489 states and 604 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) [2022-04-05 09:33:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:50,993 INFO L93 Difference]: Finished difference Result 750 states and 936 transitions. [2022-04-05 09:33:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:33:50,993 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 [2022-04-05 09:33:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:50,995 INFO L225 Difference]: With dead ends: 750 [2022-04-05 09:33:50,995 INFO L226 Difference]: Without dead ends: 524 [2022-04-05 09:33:50,996 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 [2022-04-05 09:33:50,996 INFO L913 BasicCegarLoop]: 375 mSDtfsCounter, 435 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:50,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 1369 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:33:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-05 09:33:51,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 489. [2022-04-05 09:33:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.234375) internal successors, (474), 391 states have internal predecessors, (474), 60 states have call successors, (60), 42 states have call predecessors, (60), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-05 09:33:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 602 transitions. [2022-04-05 09:33:51,037 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 602 transitions. Word has length 71 [2022-04-05 09:33:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:51,037 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 602 transitions. [2022-04-05 09:33:51,037 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) [2022-04-05 09:33:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 602 transitions. [2022-04-05 09:33:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 09:33:51,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:51,038 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] [2022-04-05 09:33:51,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-05 09:33:51,039 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1439851345, now seen corresponding path program 1 times [2022-04-05 09:33:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:51,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774336825] [2022-04-05 09:33:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:51,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774336825] [2022-04-05 09:33:51,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774336825] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:51,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:51,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703318129] [2022-04-05 09:33:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:51,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:51,230 INFO L87 Difference]: Start difference. First operand 489 states and 602 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) [2022-04-05 09:33:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:52,278 INFO L93 Difference]: Finished difference Result 522 states and 640 transitions. [2022-04-05 09:33:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:52,279 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 [2022-04-05 09:33:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:52,280 INFO L225 Difference]: With dead ends: 522 [2022-04-05 09:33:52,280 INFO L226 Difference]: Without dead ends: 501 [2022-04-05 09:33:52,280 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 [2022-04-05 09:33:52,281 INFO L913 BasicCegarLoop]: 369 mSDtfsCounter, 599 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:52,281 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1611 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 09:33:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-04-05 09:33:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 485. [2022-04-05 09:33:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 381 states have (on average 1.2335958005249343) internal successors, (470), 388 states have internal predecessors, (470), 59 states have call successors, (59), 42 states have call predecessors, (59), 44 states have return successors, (67), 55 states have call predecessors, (67), 53 states have call successors, (67) [2022-04-05 09:33:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 596 transitions. [2022-04-05 09:33:52,338 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 596 transitions. Word has length 63 [2022-04-05 09:33:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:52,338 INFO L478 AbstractCegarLoop]: Abstraction has 485 states and 596 transitions. [2022-04-05 09:33:52,338 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) [2022-04-05 09:33:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 596 transitions. [2022-04-05 09:33:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 09:33:52,339 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:52,340 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:52,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-05 09:33:52,340 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1734732644, now seen corresponding path program 1 times [2022-04-05 09:33:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133361034] [2022-04-05 09:33:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 09:33:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133361034] [2022-04-05 09:33:52,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133361034] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:52,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:52,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:33:52,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764604639] [2022-04-05 09:33:52,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:52,527 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:33:52,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:52,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:33:52,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:52,529 INFO L87 Difference]: Start difference. First operand 485 states and 596 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) [2022-04-05 09:33:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:53,518 INFO L93 Difference]: Finished difference Result 512 states and 627 transitions. [2022-04-05 09:33:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:53,519 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 [2022-04-05 09:33:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:53,520 INFO L225 Difference]: With dead ends: 512 [2022-04-05 09:33:53,520 INFO L226 Difference]: Without dead ends: 490 [2022-04-05 09:33:53,521 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 [2022-04-05 09:33:53,521 INFO L913 BasicCegarLoop]: 375 mSDtfsCounter, 425 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:53,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1498 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-04-05 09:33:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 474. [2022-04-05 09:33:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 372 states have (on average 1.2311827956989247) internal successors, (458), 379 states have internal predecessors, (458), 58 states have call successors, (58), 42 states have call predecessors, (58), 43 states have return successors, (65), 53 states have call predecessors, (65), 52 states have call successors, (65) [2022-04-05 09:33:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 581 transitions. [2022-04-05 09:33:53,568 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 581 transitions. Word has length 64 [2022-04-05 09:33:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:53,568 INFO L478 AbstractCegarLoop]: Abstraction has 474 states and 581 transitions. [2022-04-05 09:33:53,568 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) [2022-04-05 09:33:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 581 transitions. [2022-04-05 09:33:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 09:33:53,569 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:53,569 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:53,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-05 09:33:53,569 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:53,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash -144637562, now seen corresponding path program 1 times [2022-04-05 09:33:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:53,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768637554] [2022-04-05 09:33:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:33:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:53,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768637554] [2022-04-05 09:33:53,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768637554] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:53,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:53,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:53,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243048047] [2022-04-05 09:33:53,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:53,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:53,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:53,757 INFO L87 Difference]: Start difference. First operand 474 states and 581 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) [2022-04-05 09:33:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:54,745 INFO L93 Difference]: Finished difference Result 507 states and 619 transitions. [2022-04-05 09:33:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:54,745 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 [2022-04-05 09:33:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:54,747 INFO L225 Difference]: With dead ends: 507 [2022-04-05 09:33:54,747 INFO L226 Difference]: Without dead ends: 485 [2022-04-05 09:33:54,747 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 [2022-04-05 09:33:54,747 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 455 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:54,747 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1662 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-04-05 09:33:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 469. [2022-04-05 09:33:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 368 states have (on average 1.2309782608695652) internal successors, (453), 375 states have internal predecessors, (453), 57 states have call successors, (57), 42 states have call predecessors, (57), 43 states have return successors, (64), 52 states have call predecessors, (64), 51 states have call successors, (64) [2022-04-05 09:33:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 574 transitions. [2022-04-05 09:33:54,788 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 574 transitions. Word has length 64 [2022-04-05 09:33:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:54,788 INFO L478 AbstractCegarLoop]: Abstraction has 469 states and 574 transitions. [2022-04-05 09:33:54,788 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) [2022-04-05 09:33:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 574 transitions. [2022-04-05 09:33:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 09:33:54,789 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:54,789 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:54,789 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-05 09:33:54,789 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1120155272, now seen corresponding path program 1 times [2022-04-05 09:33:54,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:54,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780573854] [2022-04-05 09:33:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:54,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:33:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:54,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:54,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780573854] [2022-04-05 09:33:54,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780573854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:54,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:54,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222229968] [2022-04-05 09:33:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:54,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:54,993 INFO L87 Difference]: Start difference. First operand 469 states and 574 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) [2022-04-05 09:33:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:56,025 INFO L93 Difference]: Finished difference Result 502 states and 612 transitions. [2022-04-05 09:33:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:56,026 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 [2022-04-05 09:33:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:56,027 INFO L225 Difference]: With dead ends: 502 [2022-04-05 09:33:56,027 INFO L226 Difference]: Without dead ends: 481 [2022-04-05 09:33:56,028 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 [2022-04-05 09:33:56,028 INFO L913 BasicCegarLoop]: 347 mSDtfsCounter, 291 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:56,028 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1534 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:33:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-04-05 09:33:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2022-04-05 09:33:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.2301369863013698) internal successors, (449), 372 states have internal predecessors, (449), 56 states have call successors, (56), 42 states have call predecessors, (56), 43 states have return successors, (63), 51 states have call predecessors, (63), 50 states have call successors, (63) [2022-04-05 09:33:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 568 transitions. [2022-04-05 09:33:56,067 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 568 transitions. Word has length 64 [2022-04-05 09:33:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:56,068 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 568 transitions. [2022-04-05 09:33:56,068 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) [2022-04-05 09:33:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 568 transitions. [2022-04-05 09:33:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 09:33:56,069 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:56,069 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:33:56,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-05 09:33:56,069 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1809242026, now seen corresponding path program 1 times [2022-04-05 09:33:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037924759] [2022-04-05 09:33:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 09:33:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:33:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:33:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:33:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037924759] [2022-04-05 09:33:56,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037924759] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:56,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:56,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 09:33:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151491126] [2022-04-05 09:33:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:56,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 09:33:56,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 09:33:56,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-05 09:33:56,228 INFO L87 Difference]: Start difference. First operand 465 states and 568 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:33:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:57,073 INFO L93 Difference]: Finished difference Result 878 states and 1082 transitions. [2022-04-05 09:33:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 09:33:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-04-05 09:33:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:57,075 INFO L225 Difference]: With dead ends: 878 [2022-04-05 09:33:57,075 INFO L226 Difference]: Without dead ends: 625 [2022-04-05 09:33:57,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:33:57,076 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 525 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:57,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 990 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:33:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-04-05 09:33:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 586. [2022-04-05 09:33:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 458 states have (on average 1.220524017467249) internal successors, (559), 467 states have internal predecessors, (559), 69 states have call successors, (69), 52 states have call predecessors, (69), 58 states have return successors, (88), 67 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-05 09:33:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 716 transitions. [2022-04-05 09:33:57,124 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 716 transitions. Word has length 70 [2022-04-05 09:33:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:57,124 INFO L478 AbstractCegarLoop]: Abstraction has 586 states and 716 transitions. [2022-04-05 09:33:57,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 09:33:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 716 transitions. [2022-04-05 09:33:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 09:33:57,125 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:57,125 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] [2022-04-05 09:33:57,126 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-05 09:33:57,126 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1680266649, now seen corresponding path program 1 times [2022-04-05 09:33:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:57,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178169147] [2022-04-05 09:33:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:33:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 09:33:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178169147] [2022-04-05 09:33:57,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178169147] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:57,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:57,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:33:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895710902] [2022-04-05 09:33:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:57,309 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:33:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:33:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:33:57,310 INFO L87 Difference]: Start difference. First operand 586 states and 716 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) [2022-04-05 09:33:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:58,256 INFO L93 Difference]: Finished difference Result 619 states and 755 transitions. [2022-04-05 09:33:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 09:33:58,259 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 [2022-04-05 09:33:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:58,261 INFO L225 Difference]: With dead ends: 619 [2022-04-05 09:33:58,261 INFO L226 Difference]: Without dead ends: 576 [2022-04-05 09:33:58,262 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 [2022-04-05 09:33:58,262 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 447 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:58,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1465 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:33:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-04-05 09:33:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2022-04-05 09:33:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 437 states have (on average 1.2196796338672768) internal successors, (533), 446 states have internal predecessors, (533), 66 states have call successors, (66), 50 states have call predecessors, (66), 56 states have return successors, (85), 64 states have call predecessors, (85), 61 states have call successors, (85) [2022-04-05 09:33:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 684 transitions. [2022-04-05 09:33:58,322 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 684 transitions. Word has length 68 [2022-04-05 09:33:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:58,322 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 684 transitions. [2022-04-05 09:33:58,323 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) [2022-04-05 09:33:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 684 transitions. [2022-04-05 09:33:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-05 09:33:58,323 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:58,323 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] [2022-04-05 09:33:58,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-05 09:33:58,324 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash -815860561, now seen corresponding path program 1 times [2022-04-05 09:33:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:58,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356737909] [2022-04-05 09:33:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:33:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:33:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 09:33:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:33:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:33:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 09:33:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:33:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:33:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356737909] [2022-04-05 09:33:58,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356737909] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:33:58,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:33:58,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:33:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745121997] [2022-04-05 09:33:58,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:33:58,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:33:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:33:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:33:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:33:58,540 INFO L87 Difference]: Start difference. First operand 560 states and 684 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) [2022-04-05 09:33:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:33:59,871 INFO L93 Difference]: Finished difference Result 589 states and 718 transitions. [2022-04-05 09:33:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 09:33:59,871 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 [2022-04-05 09:33:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:33:59,873 INFO L225 Difference]: With dead ends: 589 [2022-04-05 09:33:59,873 INFO L226 Difference]: Without dead ends: 535 [2022-04-05 09:33:59,873 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:33:59,874 INFO L913 BasicCegarLoop]: 305 mSDtfsCounter, 287 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:33:59,874 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 875 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 09:33:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-04-05 09:33:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2022-04-05 09:33:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 403 states have (on average 1.2133995037220844) internal successors, (489), 412 states have internal predecessors, (489), 62 states have call successors, (62), 47 states have call predecessors, (62), 53 states have return successors, (81), 60 states have call predecessors, (81), 57 states have call successors, (81) [2022-04-05 09:33:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 632 transitions. [2022-04-05 09:33:59,917 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 632 transitions. Word has length 71 [2022-04-05 09:33:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:33:59,918 INFO L478 AbstractCegarLoop]: Abstraction has 519 states and 632 transitions. [2022-04-05 09:33:59,918 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) [2022-04-05 09:33:59,918 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 632 transitions. [2022-04-05 09:33:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-05 09:33:59,918 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:33:59,918 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] [2022-04-05 09:33:59,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-05 09:33:59,919 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:33:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:33:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1160220987, now seen corresponding path program 1 times [2022-04-05 09:33:59,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:33:59,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384589099] [2022-04-05 09:33:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:33:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:33:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:33:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:33:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 09:34:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 09:34:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384589099] [2022-04-05 09:34:00,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384589099] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:00,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:00,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 09:34:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973488463] [2022-04-05 09:34:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:00,077 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 09:34:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 09:34:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-05 09:34:00,077 INFO L87 Difference]: Start difference. First operand 519 states and 632 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) [2022-04-05 09:34:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:00,753 INFO L93 Difference]: Finished difference Result 840 states and 1028 transitions. [2022-04-05 09:34:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:34:00,754 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 [2022-04-05 09:34:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:00,755 INFO L225 Difference]: With dead ends: 840 [2022-04-05 09:34:00,756 INFO L226 Difference]: Without dead ends: 523 [2022-04-05 09:34:00,756 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:34:00,757 INFO L913 BasicCegarLoop]: 388 mSDtfsCounter, 724 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:00,757 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 999 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:34:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-04-05 09:34:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 501. [2022-04-05 09:34:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 389 states have (on average 1.2133676092544987) internal successors, (472), 397 states have internal predecessors, (472), 60 states have call successors, (60), 47 states have call predecessors, (60), 51 states have return successors, (70), 57 states have call predecessors, (70), 55 states have call successors, (70) [2022-04-05 09:34:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 602 transitions. [2022-04-05 09:34:00,818 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 602 transitions. Word has length 82 [2022-04-05 09:34:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:00,819 INFO L478 AbstractCegarLoop]: Abstraction has 501 states and 602 transitions. [2022-04-05 09:34:00,819 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) [2022-04-05 09:34:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 602 transitions. [2022-04-05 09:34:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-05 09:34:00,820 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:00,820 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] [2022-04-05 09:34:00,820 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-05 09:34:00,820 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 633938585, now seen corresponding path program 1 times [2022-04-05 09:34:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:00,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425853025] [2022-04-05 09:34:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 09:34:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 09:34:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:01,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425853025] [2022-04-05 09:34:01,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425853025] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:01,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:01,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:34:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835602257] [2022-04-05 09:34:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:01,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:34:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:34:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:34:01,047 INFO L87 Difference]: Start difference. First operand 501 states and 602 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) [2022-04-05 09:34:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:01,865 INFO L93 Difference]: Finished difference Result 839 states and 1046 transitions. [2022-04-05 09:34:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 09:34:01,865 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 [2022-04-05 09:34:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:01,867 INFO L225 Difference]: With dead ends: 839 [2022-04-05 09:34:01,867 INFO L226 Difference]: Without dead ends: 585 [2022-04-05 09:34:01,868 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 [2022-04-05 09:34:01,868 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 455 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:01,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1533 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:34:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-04-05 09:34:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 465. [2022-04-05 09:34:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.2136986301369863) internal successors, (443), 371 states have internal predecessors, (443), 53 states have call successors, (53), 41 states have call predecessors, (53), 46 states have return successors, (60), 53 states have call predecessors, (60), 49 states have call successors, (60) [2022-04-05 09:34:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2022-04-05 09:34:01,914 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 83 [2022-04-05 09:34:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:01,914 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2022-04-05 09:34:01,914 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) [2022-04-05 09:34:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2022-04-05 09:34:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-05 09:34:01,915 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:01,915 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] [2022-04-05 09:34:01,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-05 09:34:01,915 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1833243044, now seen corresponding path program 1 times [2022-04-05 09:34:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415910340] [2022-04-05 09:34:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 09:34:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415910340] [2022-04-05 09:34:02,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415910340] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:02,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:02,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:34:02,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789807624] [2022-04-05 09:34:02,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:02,148 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:34:02,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:34:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:34:02,149 INFO L87 Difference]: Start difference. First operand 465 states and 556 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) [2022-04-05 09:34:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:03,139 INFO L93 Difference]: Finished difference Result 526 states and 629 transitions. [2022-04-05 09:34:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:34:03,140 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 [2022-04-05 09:34:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:03,141 INFO L225 Difference]: With dead ends: 526 [2022-04-05 09:34:03,141 INFO L226 Difference]: Without dead ends: 505 [2022-04-05 09:34:03,142 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-04-05 09:34:03,142 INFO L913 BasicCegarLoop]: 289 mSDtfsCounter, 359 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:03,142 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1596 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:34:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-05 09:34:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 473. [2022-04-05 09:34:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 372 states have (on average 1.2096774193548387) internal successors, (450), 378 states have internal predecessors, (450), 53 states have call successors, (53), 41 states have call predecessors, (53), 47 states have return successors, (63), 54 states have call predecessors, (63), 49 states have call successors, (63) [2022-04-05 09:34:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 566 transitions. [2022-04-05 09:34:03,182 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 566 transitions. Word has length 88 [2022-04-05 09:34:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:03,182 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 566 transitions. [2022-04-05 09:34:03,182 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) [2022-04-05 09:34:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 566 transitions. [2022-04-05 09:34:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-05 09:34:03,183 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:03,183 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] [2022-04-05 09:34:03,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-05 09:34:03,183 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2018356459, now seen corresponding path program 1 times [2022-04-05 09:34:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:03,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234695814] [2022-04-05 09:34:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:03,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 09:34:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:03,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234695814] [2022-04-05 09:34:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234695814] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:03,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:03,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:34:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153520317] [2022-04-05 09:34:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:03,428 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:34:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:34:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:34:03,429 INFO L87 Difference]: Start difference. First operand 473 states and 566 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) [2022-04-05 09:34:04,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:04,398 INFO L93 Difference]: Finished difference Result 526 states and 628 transitions. [2022-04-05 09:34:04,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:34:04,399 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 [2022-04-05 09:34:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:04,400 INFO L225 Difference]: With dead ends: 526 [2022-04-05 09:34:04,400 INFO L226 Difference]: Without dead ends: 505 [2022-04-05 09:34:04,401 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:34:04,401 INFO L913 BasicCegarLoop]: 305 mSDtfsCounter, 459 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:04,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1691 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:34:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-05 09:34:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2022-04-05 09:34:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.210958904109589) internal successors, (442), 371 states have internal predecessors, (442), 53 states have call successors, (53), 41 states have call predecessors, (53), 46 states have return successors, (60), 53 states have call predecessors, (60), 49 states have call successors, (60) [2022-04-05 09:34:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2022-04-05 09:34:04,448 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 89 [2022-04-05 09:34:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:04,449 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2022-04-05 09:34:04,449 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) [2022-04-05 09:34:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2022-04-05 09:34:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-05 09:34:04,449 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:04,450 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:04,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-05 09:34:04,450 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -72110269, now seen corresponding path program 1 times [2022-04-05 09:34:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875272927] [2022-04-05 09:34:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:04,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 09:34:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 09:34:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:04,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:04,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875272927] [2022-04-05 09:34:04,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875272927] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:04,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:04,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:34:04,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997286222] [2022-04-05 09:34:04,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:04,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:34:04,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:34:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:34:04,632 INFO L87 Difference]: Start difference. First operand 465 states and 555 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 09:34:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:05,264 INFO L93 Difference]: Finished difference Result 522 states and 617 transitions. [2022-04-05 09:34:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 09:34:05,265 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-04-05 09:34:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:05,266 INFO L225 Difference]: With dead ends: 522 [2022-04-05 09:34:05,266 INFO L226 Difference]: Without dead ends: 483 [2022-04-05 09:34:05,267 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:34:05,267 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 331 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:05,267 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1063 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 09:34:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-04-05 09:34:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 459. [2022-04-05 09:34:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 361 states have (on average 1.2132963988919667) internal successors, (438), 367 states have internal predecessors, (438), 51 states have call successors, (51), 41 states have call predecessors, (51), 46 states have return successors, (57), 51 states have call predecessors, (57), 47 states have call successors, (57) [2022-04-05 09:34:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 546 transitions. [2022-04-05 09:34:05,322 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 546 transitions. Word has length 98 [2022-04-05 09:34:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:05,323 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 546 transitions. [2022-04-05 09:34:05,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 09:34:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 546 transitions. [2022-04-05 09:34:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-05 09:34:05,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:05,324 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, 1, 1, 1, 1] [2022-04-05 09:34:05,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-05 09:34:05,325 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 221001860, now seen corresponding path program 1 times [2022-04-05 09:34:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:05,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763879375] [2022-04-05 09:34:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:34:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 09:34:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 09:34:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:05,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763879375] [2022-04-05 09:34:05,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763879375] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:05,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:05,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-05 09:34:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589360384] [2022-04-05 09:34:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:05,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 09:34:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 09:34:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-05 09:34:05,532 INFO L87 Difference]: Start difference. First operand 459 states and 546 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:34:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:07,810 INFO L93 Difference]: Finished difference Result 1616 states and 1898 transitions. [2022-04-05 09:34:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-05 09:34:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 92 [2022-04-05 09:34:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:07,814 INFO L225 Difference]: With dead ends: 1616 [2022-04-05 09:34:07,814 INFO L226 Difference]: Without dead ends: 1310 [2022-04-05 09:34:07,815 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 09:34:07,815 INFO L913 BasicCegarLoop]: 577 mSDtfsCounter, 1523 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:07,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 883 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-05 09:34:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-04-05 09:34:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1036. [2022-04-05 09:34:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 820 states have (on average 1.197560975609756) internal successors, (982), 833 states have internal predecessors, (982), 103 states have call successors, (103), 93 states have call predecessors, (103), 112 states have return successors, (128), 111 states have call predecessors, (128), 99 states have call successors, (128) [2022-04-05 09:34:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1213 transitions. [2022-04-05 09:34:07,921 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1213 transitions. Word has length 92 [2022-04-05 09:34:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:07,921 INFO L478 AbstractCegarLoop]: Abstraction has 1036 states and 1213 transitions. [2022-04-05 09:34:07,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-05 09:34:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1213 transitions. [2022-04-05 09:34:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-05 09:34:07,923 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:07,923 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:07,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-05 09:34:07,923 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:07,923 INFO L85 PathProgramCache]: Analyzing trace with hash 457485908, now seen corresponding path program 1 times [2022-04-05 09:34:07,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:07,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819842485] [2022-04-05 09:34:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 09:34:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 09:34:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:08,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819842485] [2022-04-05 09:34:08,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819842485] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:08,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:08,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:34:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164706340] [2022-04-05 09:34:08,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:08,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:34:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:34:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:34:08,188 INFO L87 Difference]: Start difference. First operand 1036 states and 1213 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-05 09:34:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:09,571 INFO L93 Difference]: Finished difference Result 1962 states and 2306 transitions. [2022-04-05 09:34:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 09:34:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-04-05 09:34:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:09,576 INFO L225 Difference]: With dead ends: 1962 [2022-04-05 09:34:09,576 INFO L226 Difference]: Without dead ends: 1897 [2022-04-05 09:34:09,577 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:34:09,577 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 698 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:09,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2058 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 09:34:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2022-04-05 09:34:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1000. [2022-04-05 09:34:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 792 states have (on average 1.196969696969697) internal successors, (948), 803 states have internal predecessors, (948), 97 states have call successors, (97), 91 states have call predecessors, (97), 110 states have return successors, (122), 105 states have call predecessors, (122), 93 states have call successors, (122) [2022-04-05 09:34:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1167 transitions. [2022-04-05 09:34:09,700 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1167 transitions. Word has length 99 [2022-04-05 09:34:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:09,700 INFO L478 AbstractCegarLoop]: Abstraction has 1000 states and 1167 transitions. [2022-04-05 09:34:09,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-05 09:34:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1167 transitions. [2022-04-05 09:34:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-05 09:34:09,702 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:09,702 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:09,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-05 09:34:09,703 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 925491343, now seen corresponding path program 1 times [2022-04-05 09:34:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176632053] [2022-04-05 09:34:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-05 09:34:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 09:34:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 09:34:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:09,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176632053] [2022-04-05 09:34:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176632053] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:09,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-05 09:34:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244334298] [2022-04-05 09:34:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:09,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 09:34:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 09:34:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-05 09:34:09,915 INFO L87 Difference]: Start difference. First operand 1000 states and 1167 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:34:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:10,942 INFO L93 Difference]: Finished difference Result 1010 states and 1176 transitions. [2022-04-05 09:34:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:34:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2022-04-05 09:34:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:10,945 INFO L225 Difference]: With dead ends: 1010 [2022-04-05 09:34:10,945 INFO L226 Difference]: Without dead ends: 804 [2022-04-05 09:34:10,946 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:34:10,946 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 602 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:10,946 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 568 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 09:34:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-04-05 09:34:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 796. [2022-04-05 09:34:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 624 states have (on average 1.2003205128205128) internal successors, (749), 633 states have internal predecessors, (749), 81 states have call successors, (81), 76 states have call predecessors, (81), 90 states have return successors, (100), 86 states have call predecessors, (100), 78 states have call successors, (100) [2022-04-05 09:34:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 930 transitions. [2022-04-05 09:34:11,034 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 930 transitions. Word has length 93 [2022-04-05 09:34:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:11,035 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 930 transitions. [2022-04-05 09:34:11,035 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-05 09:34:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 930 transitions. [2022-04-05 09:34:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-05 09:34:11,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:11,036 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:11,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-05 09:34:11,036 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1426092271, now seen corresponding path program 1 times [2022-04-05 09:34:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436718399] [2022-04-05 09:34:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 09:34:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436718399] [2022-04-05 09:34:11,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436718399] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:34:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392277714] [2022-04-05 09:34:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:11,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:34:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:34:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:34:11,341 INFO L87 Difference]: Start difference. First operand 796 states and 930 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-05 09:34:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:11,932 INFO L93 Difference]: Finished difference Result 1048 states and 1235 transitions. [2022-04-05 09:34:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:34:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-04-05 09:34:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:11,934 INFO L225 Difference]: With dead ends: 1048 [2022-04-05 09:34:11,934 INFO L226 Difference]: Without dead ends: 834 [2022-04-05 09:34:11,935 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-04-05 09:34:11,935 INFO L913 BasicCegarLoop]: 179 mSDtfsCounter, 337 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:11,935 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1069 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:34:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-04-05 09:34:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 814. [2022-04-05 09:34:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 640 states have (on average 1.1859375) internal successors, (759), 651 states have internal predecessors, (759), 83 states have call successors, (83), 76 states have call predecessors, (83), 90 states have return successors, (100), 86 states have call predecessors, (100), 78 states have call successors, (100) [2022-04-05 09:34:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 942 transitions. [2022-04-05 09:34:12,035 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 942 transitions. Word has length 104 [2022-04-05 09:34:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:12,035 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 942 transitions. [2022-04-05 09:34:12,035 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-05 09:34:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 942 transitions. [2022-04-05 09:34:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-05 09:34:12,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:12,036 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:12,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-05 09:34:12,036 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1466232135, now seen corresponding path program 1 times [2022-04-05 09:34:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:12,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979069441] [2022-04-05 09:34:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:12,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 09:34:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 09:34:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-05 09:34:12,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979069441] [2022-04-05 09:34:12,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979069441] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:12,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:12,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-05 09:34:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403551440] [2022-04-05 09:34:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:12,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 09:34:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 09:34:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-05 09:34:12,274 INFO L87 Difference]: Start difference. First operand 814 states and 942 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-05 09:34:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:12,757 INFO L93 Difference]: Finished difference Result 867 states and 993 transitions. [2022-04-05 09:34:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 09:34:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 113 [2022-04-05 09:34:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:12,759 INFO L225 Difference]: With dead ends: 867 [2022-04-05 09:34:12,759 INFO L226 Difference]: Without dead ends: 717 [2022-04-05 09:34:12,760 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-04-05 09:34:12,760 INFO L913 BasicCegarLoop]: 181 mSDtfsCounter, 153 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:12,760 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 897 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:34:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-04-05 09:34:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 449. [2022-04-05 09:34:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 354 states have (on average 1.1440677966101696) internal successors, (405), 358 states have internal predecessors, (405), 46 states have call successors, (46), 46 states have call predecessors, (46), 48 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-04-05 09:34:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 499 transitions. [2022-04-05 09:34:12,829 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 499 transitions. Word has length 113 [2022-04-05 09:34:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:12,829 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 499 transitions. [2022-04-05 09:34:12,829 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-05 09:34:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 499 transitions. [2022-04-05 09:34:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-05 09:34:12,830 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:12,830 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:12,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-05 09:34:12,830 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash -165727650, now seen corresponding path program 1 times [2022-04-05 09:34:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:12,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896522929] [2022-04-05 09:34:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 09:34:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 09:34:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:13,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896522929] [2022-04-05 09:34:13,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896522929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:13,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:13,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:34:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224798336] [2022-04-05 09:34:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:13,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:34:13,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:34:13,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:34:13,071 INFO L87 Difference]: Start difference. First operand 449 states and 499 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-05 09:34:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:13,540 INFO L93 Difference]: Finished difference Result 520 states and 576 transitions. [2022-04-05 09:34:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:34:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-04-05 09:34:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:13,542 INFO L225 Difference]: With dead ends: 520 [2022-04-05 09:34:13,542 INFO L226 Difference]: Without dead ends: 477 [2022-04-05 09:34:13,542 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:34:13,542 INFO L913 BasicCegarLoop]: 175 mSDtfsCounter, 183 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:13,543 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 701 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 09:34:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-04-05 09:34:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 457. [2022-04-05 09:34:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 360 states have (on average 1.1416666666666666) internal successors, (411), 364 states have internal predecessors, (411), 46 states have call successors, (46), 46 states have call predecessors, (46), 50 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-04-05 09:34:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 507 transitions. [2022-04-05 09:34:13,615 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 507 transitions. Word has length 120 [2022-04-05 09:34:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:13,615 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 507 transitions. [2022-04-05 09:34:13,615 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-05 09:34:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 507 transitions. [2022-04-05 09:34:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-05 09:34:13,616 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:13,616 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:13,616 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-05 09:34:13,616 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1709722050, now seen corresponding path program 1 times [2022-04-05 09:34:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:13,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280648053] [2022-04-05 09:34:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 09:34:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 09:34:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:34:13,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280648053] [2022-04-05 09:34:13,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280648053] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:13,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:13,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:34:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710300058] [2022-04-05 09:34:13,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:13,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:34:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:34:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:34:13,866 INFO L87 Difference]: Start difference. First operand 457 states and 507 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-05 09:34:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:14,253 INFO L93 Difference]: Finished difference Result 612 states and 686 transitions. [2022-04-05 09:34:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:34:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-04-05 09:34:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:14,254 INFO L225 Difference]: With dead ends: 612 [2022-04-05 09:34:14,254 INFO L226 Difference]: Without dead ends: 469 [2022-04-05 09:34:14,255 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:34:14,255 INFO L913 BasicCegarLoop]: 174 mSDtfsCounter, 274 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:14,255 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 742 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 09:34:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-04-05 09:34:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2022-04-05 09:34:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 360 states have (on average 1.136111111111111) internal successors, (409), 364 states have internal predecessors, (409), 46 states have call successors, (46), 46 states have call predecessors, (46), 50 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-04-05 09:34:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 505 transitions. [2022-04-05 09:34:14,319 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 505 transitions. Word has length 120 [2022-04-05 09:34:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:14,319 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 505 transitions. [2022-04-05 09:34:14,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-05 09:34:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 505 transitions. [2022-04-05 09:34:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-04-05 09:34:14,320 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:14,321 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:14,321 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-05 09:34:14,321 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -232533850, now seen corresponding path program 1 times [2022-04-05 09:34:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923469727] [2022-04-05 09:34:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 09:34:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 09:34:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-05 09:34:14,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:14,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923469727] [2022-04-05 09:34:14,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923469727] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:14,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:14,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-05 09:34:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034851566] [2022-04-05 09:34:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:14,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-05 09:34:14,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-05 09:34:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-04-05 09:34:14,791 INFO L87 Difference]: Start difference. First operand 457 states and 505 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-05 09:34:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:15,723 INFO L93 Difference]: Finished difference Result 584 states and 664 transitions. [2022-04-05 09:34:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-05 09:34:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 150 [2022-04-05 09:34:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:15,724 INFO L225 Difference]: With dead ends: 584 [2022-04-05 09:34:15,724 INFO L226 Difference]: Without dead ends: 531 [2022-04-05 09:34:15,725 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-04-05 09:34:15,725 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 284 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:15,725 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 1428 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 09:34:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-04-05 09:34:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 491. [2022-04-05 09:34:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 390 states have (on average 1.146153846153846) internal successors, (447), 394 states have internal predecessors, (447), 46 states have call successors, (46), 46 states have call predecessors, (46), 54 states have return successors, (54), 50 states have call predecessors, (54), 44 states have call successors, (54) [2022-04-05 09:34:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 547 transitions. [2022-04-05 09:34:15,795 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 547 transitions. Word has length 150 [2022-04-05 09:34:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:15,796 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 547 transitions. [2022-04-05 09:34:15,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-05 09:34:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 547 transitions. [2022-04-05 09:34:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-04-05 09:34:15,797 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:15,797 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:15,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-05 09:34:15,797 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2130033855, now seen corresponding path program 1 times [2022-04-05 09:34:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617733653] [2022-04-05 09:34:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 09:34:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 09:34:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-05 09:34:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:16,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617733653] [2022-04-05 09:34:16,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617733653] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:16,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:16,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-05 09:34:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284081597] [2022-04-05 09:34:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:16,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 09:34:16,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:16,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 09:34:16,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-04-05 09:34:16,129 INFO L87 Difference]: Start difference. First operand 491 states and 547 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-05 09:34:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:16,722 INFO L93 Difference]: Finished difference Result 664 states and 748 transitions. [2022-04-05 09:34:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 09:34:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-04-05 09:34:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:16,724 INFO L225 Difference]: With dead ends: 664 [2022-04-05 09:34:16,724 INFO L226 Difference]: Without dead ends: 519 [2022-04-05 09:34:16,724 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-04-05 09:34:16,726 INFO L913 BasicCegarLoop]: 186 mSDtfsCounter, 284 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:16,726 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1190 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 09:34:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-04-05 09:34:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 491. [2022-04-05 09:34:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 390 states have (on average 1.141025641025641) internal successors, (445), 394 states have internal predecessors, (445), 46 states have call successors, (46), 46 states have call predecessors, (46), 54 states have return successors, (54), 50 states have call predecessors, (54), 44 states have call successors, (54) [2022-04-05 09:34:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 545 transitions. [2022-04-05 09:34:16,784 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 545 transitions. Word has length 151 [2022-04-05 09:34:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:16,784 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 545 transitions. [2022-04-05 09:34:16,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-05 09:34:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 545 transitions. [2022-04-05 09:34:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-04-05 09:34:16,785 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:16,785 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:16,785 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-05 09:34:16,785 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1959969322, now seen corresponding path program 1 times [2022-04-05 09:34:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:16,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923983608] [2022-04-05 09:34:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 09:34:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 09:34:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 09:34:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-04-05 09:34:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923983608] [2022-04-05 09:34:17,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923983608] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:17,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:17,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-05 09:34:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080548953] [2022-04-05 09:34:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:17,163 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 09:34:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 09:34:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-04-05 09:34:17,164 INFO L87 Difference]: Start difference. First operand 491 states and 545 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-05 09:34:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:17,985 INFO L93 Difference]: Finished difference Result 556 states and 624 transitions. [2022-04-05 09:34:17,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 09:34:17,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-04-05 09:34:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:17,987 INFO L225 Difference]: With dead ends: 556 [2022-04-05 09:34:17,987 INFO L226 Difference]: Without dead ends: 491 [2022-04-05 09:34:17,987 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-04-05 09:34:17,988 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 144 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:17,988 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1170 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:34:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-04-05 09:34:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-04-05 09:34:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 382 states have (on average 1.1282722513089005) internal successors, (431), 386 states have internal predecessors, (431), 44 states have call successors, (44), 44 states have call predecessors, (44), 52 states have return successors, (52), 48 states have call predecessors, (52), 42 states have call successors, (52) [2022-04-05 09:34:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 527 transitions. [2022-04-05 09:34:18,079 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 527 transitions. Word has length 153 [2022-04-05 09:34:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:18,079 INFO L478 AbstractCegarLoop]: Abstraction has 479 states and 527 transitions. [2022-04-05 09:34:18,079 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-05 09:34:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 527 transitions. [2022-04-05 09:34:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-05 09:34:18,080 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:18,080 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:18,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-05 09:34:18,081 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:18,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash -249606396, now seen corresponding path program 1 times [2022-04-05 09:34:18,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:18,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700580197] [2022-04-05 09:34:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 09:34:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 09:34:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 09:34:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-04-05 09:34:18,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:18,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700580197] [2022-04-05 09:34:18,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700580197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:18,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:18,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-05 09:34:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99114065] [2022-04-05 09:34:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:18,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 09:34:18,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 09:34:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-05 09:34:18,357 INFO L87 Difference]: Start difference. First operand 479 states and 527 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-04-05 09:34:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:18,812 INFO L93 Difference]: Finished difference Result 584 states and 642 transitions. [2022-04-05 09:34:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:34:18,812 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 158 [2022-04-05 09:34:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:18,814 INFO L225 Difference]: With dead ends: 584 [2022-04-05 09:34:18,814 INFO L226 Difference]: Without dead ends: 451 [2022-04-05 09:34:18,814 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-04-05 09:34:18,814 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 320 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:18,814 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 587 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 09:34:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-04-05 09:34:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 423. [2022-04-05 09:34:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 334 states have (on average 1.1107784431137724) internal successors, (371), 338 states have internal predecessors, (371), 42 states have call successors, (42), 42 states have call predecessors, (42), 46 states have return successors, (46), 42 states have call predecessors, (46), 40 states have call successors, (46) [2022-04-05 09:34:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 459 transitions. [2022-04-05 09:34:18,879 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 459 transitions. Word has length 158 [2022-04-05 09:34:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:18,879 INFO L478 AbstractCegarLoop]: Abstraction has 423 states and 459 transitions. [2022-04-05 09:34:18,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-04-05 09:34:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 459 transitions. [2022-04-05 09:34:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-04-05 09:34:18,880 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:18,880 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:18,880 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-05 09:34:18,880 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2090831252, now seen corresponding path program 1 times [2022-04-05 09:34:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207277725] [2022-04-05 09:34:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 09:34:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 09:34:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 09:34:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-05 09:34:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207277725] [2022-04-05 09:34:19,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207277725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:19,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:19,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-05 09:34:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332815789] [2022-04-05 09:34:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:19,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 09:34:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 09:34:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-04-05 09:34:19,165 INFO L87 Difference]: Start difference. First operand 423 states and 459 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-05 09:34:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:19,530 INFO L93 Difference]: Finished difference Result 536 states and 584 transitions. [2022-04-05 09:34:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 09:34:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2022-04-05 09:34:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:19,531 INFO L225 Difference]: With dead ends: 536 [2022-04-05 09:34:19,531 INFO L226 Difference]: Without dead ends: 381 [2022-04-05 09:34:19,531 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-04-05 09:34:19,532 INFO L913 BasicCegarLoop]: 149 mSDtfsCounter, 196 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:19,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 730 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 09:34:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-04-05 09:34:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-04-05 09:34:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 298 states have (on average 1.0973154362416107) internal successors, (327), 300 states have internal predecessors, (327), 40 states have call successors, (40), 40 states have call predecessors, (40), 42 states have return successors, (42), 40 states have call predecessors, (42), 38 states have call successors, (42) [2022-04-05 09:34:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 409 transitions. [2022-04-05 09:34:19,577 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 409 transitions. Word has length 160 [2022-04-05 09:34:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:19,577 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 409 transitions. [2022-04-05 09:34:19,577 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-05 09:34:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 409 transitions. [2022-04-05 09:34:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-04-05 09:34:19,578 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:19,578 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:19,578 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-05 09:34:19,578 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1980774501, now seen corresponding path program 1 times [2022-04-05 09:34:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:19,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873956236] [2022-04-05 09:34:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 09:34:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 09:34:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 09:34:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-05 09:34:19,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:19,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873956236] [2022-04-05 09:34:19,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873956236] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:19,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:19,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-05 09:34:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746669773] [2022-04-05 09:34:19,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:19,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 09:34:19,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 09:34:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-04-05 09:34:19,917 INFO L87 Difference]: Start difference. First operand 381 states and 409 transitions. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 09:34:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:21,021 INFO L93 Difference]: Finished difference Result 762 states and 821 transitions. [2022-04-05 09:34:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 09:34:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 161 [2022-04-05 09:34:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:21,022 INFO L225 Difference]: With dead ends: 762 [2022-04-05 09:34:21,022 INFO L226 Difference]: Without dead ends: 387 [2022-04-05 09:34:21,023 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2022-04-05 09:34:21,024 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 435 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:21,024 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 597 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:34:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-04-05 09:34:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2022-04-05 09:34:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 298 states have (on average 1.0939597315436242) internal successors, (326), 300 states have internal predecessors, (326), 40 states have call successors, (40), 40 states have call predecessors, (40), 42 states have return successors, (42), 40 states have call predecessors, (42), 38 states have call successors, (42) [2022-04-05 09:34:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 408 transitions. [2022-04-05 09:34:21,085 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 408 transitions. Word has length 161 [2022-04-05 09:34:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:21,085 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 408 transitions. [2022-04-05 09:34:21,085 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 09:34:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 408 transitions. [2022-04-05 09:34:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-04-05 09:34:21,086 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:34:21,086 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:34:21,086 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-05 09:34:21,086 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:34:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:34:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash -628292860, now seen corresponding path program 1 times [2022-04-05 09:34:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:34:21,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25635785] [2022-04-05 09:34:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:34:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:34:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:34:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 09:34:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 09:34:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 09:34:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-05 09:34:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 09:34:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 09:34:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-05 09:34:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 09:34:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 09:34:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 09:34:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 09:34:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 09:34:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 09:34:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:34:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-05 09:34:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:34:21,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25635785] [2022-04-05 09:34:21,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25635785] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:34:21,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:34:21,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-05 09:34:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481475807] [2022-04-05 09:34:21,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:34:21,697 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-05 09:34:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:34:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-05 09:34:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-04-05 09:34:21,698 INFO L87 Difference]: Start difference. First operand 381 states and 408 transitions. Second operand has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 09:34:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:34:22,801 INFO L93 Difference]: Finished difference Result 387 states and 416 transitions. [2022-04-05 09:34:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-05 09:34:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 161 [2022-04-05 09:34:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:34:22,801 INFO L225 Difference]: With dead ends: 387 [2022-04-05 09:34:22,801 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 09:34:22,803 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 09:34:22,803 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 432 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 09:34:22,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 673 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 09:34:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 09:34:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 09:34:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 09:34:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 09:34:22,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2022-04-05 09:34:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:34:22,804 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 09:34:22,804 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-05 09:34:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 09:34:22,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 09:34:22,807 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 09:34:22,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-05 09:34:22,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.