/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-7968f31 [2022-03-17 23:15:23,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 23:15:23,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 23:15:23,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 23:15:23,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 23:15:23,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 23:15:23,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 23:15:23,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 23:15:23,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 23:15:23,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 23:15:23,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 23:15:23,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 23:15:23,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 23:15:23,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 23:15:23,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 23:15:23,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 23:15:23,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 23:15:23,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 23:15:23,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 23:15:23,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 23:15:23,619 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 23:15:23,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 23:15:23,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 23:15:23,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 23:15:23,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 23:15:23,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 23:15:23,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 23:15:23,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 23:15:23,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 23:15:23,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 23:15:23,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-17 23:15:23,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 23:15:23,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 23:15:23,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 23:15:23,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 23:15:23,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 23:15:23,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 23:15:23,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 23:15:23,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 23:15:23,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 23:15:23,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 23:15:23,658 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 23:15:23,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 23:15:23,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 23:15:23,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 23:15:23,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:15:23,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 23:15:23,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 23:15:23,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 23:15:23,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 23:15:23,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 23:15:23,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 23:15:23,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 23:15:23,662 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 23:15:23,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 23:15:23,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 23:15:23,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 23:15:23,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 23:15:23,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 23:15:23,899 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 23:15:23,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-03-17 23:15:23,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf282bc0/e855a3de08dd4b95a7e2cf140d162da7/FLAG39803d8b0 [2022-03-17 23:15:24,372 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 23:15:24,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-03-17 23:15:24,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf282bc0/e855a3de08dd4b95a7e2cf140d162da7/FLAG39803d8b0 [2022-03-17 23:15:24,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf282bc0/e855a3de08dd4b95a7e2cf140d162da7 [2022-03-17 23:15:24,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 23:15:24,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 23:15:24,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 23:15:24,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 23:15:24,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 23:15:24,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475b1040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24, skipping insertion in model container [2022-03-17 23:15:24,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 23:15:24,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 23:15:24,698 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] [2022-03-17 23:15:24,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:15:24,706 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 23:15:24,771 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] [2022-03-17 23:15:24,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:15:24,782 INFO L208 MainTranslator]: Completed translation [2022-03-17 23:15:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24 WrapperNode [2022-03-17 23:15:24,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 23:15:24,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 23:15:24,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 23:15:24,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 23:15:24,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 23:15:24,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 23:15:24,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 23:15:24,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 23:15:24,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (1/1) ... [2022-03-17 23:15:24,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:15:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:15:24,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 23:15:24,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 23:15:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 23:15:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 23:15:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 23:15:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-17 23:15:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-17 23:15:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-17 23:15:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-17 23:15:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-17 23:15:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-17 23:15:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-17 23:15:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-17 23:15:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-17 23:15:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-17 23:15:24,999 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-17 23:15:24,999 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-17 23:15:24,999 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-17 23:15:24,999 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-17 23:15:24,999 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 23:15:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-17 23:15:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-17 23:15:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-17 23:15:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 23:15:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 23:15:25,160 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 23:15:25,161 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 23:15:25,220 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,258 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,258 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,272 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,290 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,290 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,295 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,475 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-17 23:15:25,475 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-17 23:15:25,477 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-03-17 23:15:25,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-03-17 23:15:25,557 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,566 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-17 23:15:25,567 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-17 23:15:25,612 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,616 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,616 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,617 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,621 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,621 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,621 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,627 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,628 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,661 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,682 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-17 23:15:25,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-17 23:15:25,688 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-17 23:15:25,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-17 23:15:25,805 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,809 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,813 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,813 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,813 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:15:25,816 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 23:15:25,816 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 23:15:25,822 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 23:15:25,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 23:15:25,829 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 23:15:25,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:15:25 BoogieIcfgContainer [2022-03-17 23:15:25,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 23:15:25,831 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 23:15:25,831 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 23:15:25,836 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 23:15:25,838 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:15:25" (1/1) ... [2022-03-17 23:15:25,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:15:25 BasicIcfg [2022-03-17 23:15:25,870 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 23:15:25,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 23:15:25,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 23:15:25,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 23:15:25,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:15:24" (1/4) ... [2022-03-17 23:15:25,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca7b52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:15:25, skipping insertion in model container [2022-03-17 23:15:25,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:15:24" (2/4) ... [2022-03-17 23:15:25,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca7b52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:15:25, skipping insertion in model container [2022-03-17 23:15:25,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:15:25" (3/4) ... [2022-03-17 23:15:25,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca7b52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:15:25, skipping insertion in model container [2022-03-17 23:15:25,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:15:25" (4/4) ... [2022-03-17 23:15:25,875 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.cqvasr [2022-03-17 23:15:25,878 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 23:15:25,878 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 23:15:25,910 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 23:15:25,915 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 [2022-03-17 23:15:25,915 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 23:15:25,932 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) [2022-03-17 23:15:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 23:15:25,936 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:25,936 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:25,937 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash 871879161, now seen corresponding path program 1 times [2022-03-17 23:15:25,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:25,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190912802] [2022-03-17 23:15:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:26,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190912802] [2022-03-17 23:15:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190912802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:26,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 23:15:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17262506] [2022-03-17 23:15:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:26,382 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 23:15:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 23:15:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:15:26,403 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) [2022-03-17 23:15:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:27,359 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2022-03-17 23:15:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 23:15:27,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-17 23:15:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:27,370 INFO L225 Difference]: With dead ends: 666 [2022-03-17 23:15:27,370 INFO L226 Difference]: Without dead ends: 422 [2022-03-17 23:15:27,375 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:15:27,377 INFO L912 BasicCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:27,378 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 735 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:15:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-17 23:15:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2022-03-17 23:15:27,436 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) [2022-03-17 23:15:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2022-03-17 23:15:27,439 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2022-03-17 23:15:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:27,439 INFO L478 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2022-03-17 23:15:27,439 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 23:15:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2022-03-17 23:15:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-17 23:15:27,441 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:27,441 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:27,441 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 23:15:27,441 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:27,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash 291212257, now seen corresponding path program 1 times [2022-03-17 23:15:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:27,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839630725] [2022-03-17 23:15:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:27,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839630725] [2022-03-17 23:15:27,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839630725] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:27,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:27,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:15:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120735007] [2022-03-17 23:15:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:27,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:15:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:27,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:15:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:15:27,577 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) [2022-03-17 23:15:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:28,910 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2022-03-17 23:15:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-17 23:15:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:28,915 INFO L225 Difference]: With dead ends: 747 [2022-03-17 23:15:28,915 INFO L226 Difference]: Without dead ends: 584 [2022-03-17 23:15:28,916 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:28,916 INFO L912 BasicCegarLoop]: 634 mSDtfsCounter, 717 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-03-17 23:15:28,917 INFO L913 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] [2022-03-17 23:15:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-03-17 23:15:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2022-03-17 23:15:29,012 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) [2022-03-17 23:15:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2022-03-17 23:15:29,016 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2022-03-17 23:15:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:29,016 INFO L478 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2022-03-17 23:15:29,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:15:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2022-03-17 23:15:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 23:15:29,018 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:29,018 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:29,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 23:15:29,018 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 525888156, now seen corresponding path program 1 times [2022-03-17 23:15:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:29,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540410576] [2022-03-17 23:15:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:29,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540410576] [2022-03-17 23:15:29,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540410576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:29,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:29,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:15:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426412812] [2022-03-17 23:15:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:29,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:15:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:15:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:15:29,176 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) [2022-03-17 23:15:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:29,869 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2022-03-17 23:15:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:29,870 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 [2022-03-17 23:15:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:29,873 INFO L225 Difference]: With dead ends: 695 [2022-03-17 23:15:29,873 INFO L226 Difference]: Without dead ends: 676 [2022-03-17 23:15:29,874 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:29,875 INFO L912 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 [2022-03-17 23:15:29,875 INFO L913 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] [2022-03-17 23:15:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-03-17 23:15:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2022-03-17 23:15:29,916 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) [2022-03-17 23:15:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2022-03-17 23:15:29,919 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2022-03-17 23:15:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:29,919 INFO L478 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2022-03-17 23:15:29,919 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) [2022-03-17 23:15:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2022-03-17 23:15:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 23:15:29,921 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:29,921 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:29,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 23:15:29,921 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2004508172, now seen corresponding path program 1 times [2022-03-17 23:15:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:29,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334810881] [2022-03-17 23:15:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334810881] [2022-03-17 23:15:30,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334810881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:30,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:30,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:15:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430639680] [2022-03-17 23:15:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:30,054 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:15:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:15:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:15:30,055 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) [2022-03-17 23:15:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:31,233 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2022-03-17 23:15:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:31,233 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 [2022-03-17 23:15:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:31,238 INFO L225 Difference]: With dead ends: 1117 [2022-03-17 23:15:31,238 INFO L226 Difference]: Without dead ends: 819 [2022-03-17 23:15:31,240 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:31,249 INFO L912 BasicCegarLoop]: 541 mSDtfsCounter, 724 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:31,250 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 744 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:15:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-17 23:15:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2022-03-17 23:15:31,307 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) [2022-03-17 23:15:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2022-03-17 23:15:31,312 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2022-03-17 23:15:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:31,313 INFO L478 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2022-03-17 23:15:31,313 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) [2022-03-17 23:15:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2022-03-17 23:15:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 23:15:31,335 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:31,335 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:31,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 23:15:31,336 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1331218314, now seen corresponding path program 1 times [2022-03-17 23:15:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:31,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355331648] [2022-03-17 23:15:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:31,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355331648] [2022-03-17 23:15:31,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355331648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:31,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:31,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524657245] [2022-03-17 23:15:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:31,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:31,480 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) [2022-03-17 23:15:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:32,426 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2022-03-17 23:15:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:32,427 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 [2022-03-17 23:15:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:32,430 INFO L225 Difference]: With dead ends: 865 [2022-03-17 23:15:32,430 INFO L226 Difference]: Without dead ends: 860 [2022-03-17 23:15:32,430 INFO L911 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 [2022-03-17 23:15:32,431 INFO L912 BasicCegarLoop]: 476 mSDtfsCounter, 516 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:32,431 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 945 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:15:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-03-17 23:15:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2022-03-17 23:15:32,461 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) [2022-03-17 23:15:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2022-03-17 23:15:32,463 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 38 [2022-03-17 23:15:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:32,464 INFO L478 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2022-03-17 23:15:32,464 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) [2022-03-17 23:15:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2022-03-17 23:15:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 23:15:32,465 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:32,465 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:32,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 23:15:32,465 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash 528133378, now seen corresponding path program 1 times [2022-03-17 23:15:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:32,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516270406] [2022-03-17 23:15:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516270406] [2022-03-17 23:15:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516270406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:32,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:32,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 23:15:32,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523491854] [2022-03-17 23:15:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:32,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 23:15:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 23:15:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:15:32,584 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) [2022-03-17 23:15:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:33,642 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2022-03-17 23:15:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 23:15:33,642 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 [2022-03-17 23:15:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:33,645 INFO L225 Difference]: With dead ends: 842 [2022-03-17 23:15:33,646 INFO L226 Difference]: Without dead ends: 839 [2022-03-17 23:15:33,646 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:33,646 INFO L912 BasicCegarLoop]: 467 mSDtfsCounter, 256 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:33,647 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 743 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:15:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-03-17 23:15:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2022-03-17 23:15:33,678 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) [2022-03-17 23:15:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2022-03-17 23:15:33,680 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2022-03-17 23:15:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:33,681 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2022-03-17 23:15:33,681 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) [2022-03-17 23:15:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2022-03-17 23:15:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 23:15:33,682 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:33,682 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:33,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 23:15:33,682 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1133526780, now seen corresponding path program 1 times [2022-03-17 23:15:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:33,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589692684] [2022-03-17 23:15:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:15:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:33,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589692684] [2022-03-17 23:15:33,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589692684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:33,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:33,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:33,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176126312] [2022-03-17 23:15:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:33,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:33,933 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) [2022-03-17 23:15:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:35,439 INFO L93 Difference]: Finished difference Result 877 states and 1176 transitions. [2022-03-17 23:15:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:15:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-03-17 23:15:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:35,443 INFO L225 Difference]: With dead ends: 877 [2022-03-17 23:15:35,443 INFO L226 Difference]: Without dead ends: 871 [2022-03-17 23:15:35,444 INFO L911 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 [2022-03-17 23:15:35,444 INFO L912 BasicCegarLoop]: 455 mSDtfsCounter, 1349 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:35,445 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1168 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:15:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-03-17 23:15:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-03-17 23:15:35,498 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) [2022-03-17 23:15:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1103 transitions. [2022-03-17 23:15:35,502 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1103 transitions. Word has length 40 [2022-03-17 23:15:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:35,502 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1103 transitions. [2022-03-17 23:15:35,503 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1103 transitions. [2022-03-17 23:15:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-17 23:15:35,504 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:35,504 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:35,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 23:15:35,504 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash -174684695, now seen corresponding path program 1 times [2022-03-17 23:15:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:35,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805816396] [2022-03-17 23:15:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:15:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:35,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805816396] [2022-03-17 23:15:35,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805816396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:35,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:35,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276344985] [2022-03-17 23:15:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:35,708 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:35,708 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) [2022-03-17 23:15:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:37,139 INFO L93 Difference]: Finished difference Result 877 states and 1175 transitions. [2022-03-17 23:15:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:15:37,140 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 [2022-03-17 23:15:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:37,144 INFO L225 Difference]: With dead ends: 877 [2022-03-17 23:15:37,144 INFO L226 Difference]: Without dead ends: 871 [2022-03-17 23:15:37,145 INFO L911 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 [2022-03-17 23:15:37,145 INFO L912 BasicCegarLoop]: 456 mSDtfsCounter, 1634 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:37,145 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 885 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:15:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-03-17 23:15:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-03-17 23:15:37,193 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) [2022-03-17 23:15:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1102 transitions. [2022-03-17 23:15:37,196 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1102 transitions. Word has length 41 [2022-03-17 23:15:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:37,197 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1102 transitions. [2022-03-17 23:15:37,197 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) [2022-03-17 23:15:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1102 transitions. [2022-03-17 23:15:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-17 23:15:37,199 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:37,199 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:37,199 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 23:15:37,199 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1816872397, now seen corresponding path program 1 times [2022-03-17 23:15:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:37,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546637163] [2022-03-17 23:15:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 23:15:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:37,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546637163] [2022-03-17 23:15:37,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546637163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:37,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:37,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264132248] [2022-03-17 23:15:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:37,346 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:37,347 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) [2022-03-17 23:15:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:38,464 INFO L93 Difference]: Finished difference Result 882 states and 1180 transitions. [2022-03-17 23:15:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-03-17 23:15:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:38,468 INFO L225 Difference]: With dead ends: 882 [2022-03-17 23:15:38,469 INFO L226 Difference]: Without dead ends: 867 [2022-03-17 23:15:38,469 INFO L911 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 [2022-03-17 23:15:38,470 INFO L912 BasicCegarLoop]: 488 mSDtfsCounter, 671 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:38,471 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1290 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:15:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-03-17 23:15:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2022-03-17 23:15:38,511 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) [2022-03-17 23:15:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1098 transitions. [2022-03-17 23:15:38,513 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1098 transitions. Word has length 42 [2022-03-17 23:15:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:38,513 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1098 transitions. [2022-03-17 23:15:38,513 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1098 transitions. [2022-03-17 23:15:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-17 23:15:38,514 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:38,514 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:38,514 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 23:15:38,514 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1390592098, now seen corresponding path program 1 times [2022-03-17 23:15:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5405917] [2022-03-17 23:15:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 23:15:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:15:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:38,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5405917] [2022-03-17 23:15:38,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5405917] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:38,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:38,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259904749] [2022-03-17 23:15:38,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:38,691 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:38,692 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) [2022-03-17 23:15:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:39,702 INFO L93 Difference]: Finished difference Result 880 states and 1176 transitions. [2022-03-17 23:15:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:39,703 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 [2022-03-17 23:15:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:39,706 INFO L225 Difference]: With dead ends: 880 [2022-03-17 23:15:39,706 INFO L226 Difference]: Without dead ends: 860 [2022-03-17 23:15:39,706 INFO L911 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 [2022-03-17 23:15:39,707 INFO L912 BasicCegarLoop]: 475 mSDtfsCounter, 515 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:39,707 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1301 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-03-17 23:15:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2022-03-17 23:15:39,744 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) [2022-03-17 23:15:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1089 transitions. [2022-03-17 23:15:39,746 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1089 transitions. Word has length 41 [2022-03-17 23:15:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:39,746 INFO L478 AbstractCegarLoop]: Abstraction has 810 states and 1089 transitions. [2022-03-17 23:15:39,746 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) [2022-03-17 23:15:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1089 transitions. [2022-03-17 23:15:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-17 23:15:39,747 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:39,747 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:39,748 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 23:15:39,748 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash -4159802, now seen corresponding path program 1 times [2022-03-17 23:15:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:39,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120637094] [2022-03-17 23:15:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:39,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120637094] [2022-03-17 23:15:39,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120637094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:39,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:39,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049660903] [2022-03-17 23:15:39,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:39,888 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:39,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:39,889 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) [2022-03-17 23:15:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:40,988 INFO L93 Difference]: Finished difference Result 857 states and 1144 transitions. [2022-03-17 23:15:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:40,993 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 [2022-03-17 23:15:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:40,996 INFO L225 Difference]: With dead ends: 857 [2022-03-17 23:15:40,996 INFO L226 Difference]: Without dead ends: 835 [2022-03-17 23:15:40,997 INFO L911 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 [2022-03-17 23:15:40,997 INFO L912 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:40,997 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1012 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-03-17 23:15:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 812. [2022-03-17 23:15:41,040 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) [2022-03-17 23:15:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1091 transitions. [2022-03-17 23:15:41,042 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1091 transitions. Word has length 42 [2022-03-17 23:15:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:41,042 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1091 transitions. [2022-03-17 23:15:41,043 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) [2022-03-17 23:15:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1091 transitions. [2022-03-17 23:15:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-17 23:15:41,044 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:41,044 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:41,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 23:15:41,044 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 383655172, now seen corresponding path program 1 times [2022-03-17 23:15:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:41,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989986392] [2022-03-17 23:15:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:41,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 23:15:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:41,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989986392] [2022-03-17 23:15:41,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989986392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:41,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:41,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:15:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534910670] [2022-03-17 23:15:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:41,195 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:15:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:15:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:15:41,195 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) [2022-03-17 23:15:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:42,464 INFO L93 Difference]: Finished difference Result 908 states and 1209 transitions. [2022-03-17 23:15:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:42,465 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 [2022-03-17 23:15:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:42,468 INFO L225 Difference]: With dead ends: 908 [2022-03-17 23:15:42,468 INFO L226 Difference]: Without dead ends: 840 [2022-03-17 23:15:42,469 INFO L911 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 [2022-03-17 23:15:42,469 INFO L912 BasicCegarLoop]: 432 mSDtfsCounter, 378 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:42,469 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 914 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:15:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-03-17 23:15:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 816. [2022-03-17 23:15:42,506 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) [2022-03-17 23:15:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-03-17 23:15:42,508 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 44 [2022-03-17 23:15:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:42,508 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-03-17 23:15:42,508 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) [2022-03-17 23:15:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-03-17 23:15:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-17 23:15:42,509 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:42,509 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:42,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 23:15:42,509 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash -864015436, now seen corresponding path program 1 times [2022-03-17 23:15:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457630458] [2022-03-17 23:15:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:42,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:42,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457630458] [2022-03-17 23:15:42,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457630458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:42,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:42,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696590112] [2022-03-17 23:15:42,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:42,639 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:42,639 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) [2022-03-17 23:15:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:43,801 INFO L93 Difference]: Finished difference Result 860 states and 1147 transitions. [2022-03-17 23:15:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:15:43,801 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 [2022-03-17 23:15:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:43,805 INFO L225 Difference]: With dead ends: 860 [2022-03-17 23:15:43,805 INFO L226 Difference]: Without dead ends: 838 [2022-03-17 23:15:43,805 INFO L911 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 [2022-03-17 23:15:43,806 INFO L912 BasicCegarLoop]: 461 mSDtfsCounter, 293 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:43,806 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1010 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 23:15:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-03-17 23:15:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 816. [2022-03-17 23:15:43,842 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) [2022-03-17 23:15:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-03-17 23:15:43,844 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 43 [2022-03-17 23:15:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:43,845 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-03-17 23:15:43,845 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) [2022-03-17 23:15:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-03-17 23:15:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-17 23:15:43,846 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:43,846 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:43,846 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 23:15:43,846 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash -392590886, now seen corresponding path program 1 times [2022-03-17 23:15:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330857101] [2022-03-17 23:15:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:44,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:44,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330857101] [2022-03-17 23:15:44,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330857101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:44,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:44,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:44,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513108271] [2022-03-17 23:15:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:44,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:44,004 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) [2022-03-17 23:15:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:44,862 INFO L93 Difference]: Finished difference Result 861 states and 1149 transitions. [2022-03-17 23:15:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:44,863 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 [2022-03-17 23:15:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:44,888 INFO L225 Difference]: With dead ends: 861 [2022-03-17 23:15:44,889 INFO L226 Difference]: Without dead ends: 843 [2022-03-17 23:15:44,889 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:44,890 INFO L912 BasicCegarLoop]: 457 mSDtfsCounter, 784 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:44,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1326 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:15:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-03-17 23:15:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 814. [2022-03-17 23:15:44,949 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) [2022-03-17 23:15:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1092 transitions. [2022-03-17 23:15:44,951 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1092 transitions. Word has length 45 [2022-03-17 23:15:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:44,952 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 1092 transitions. [2022-03-17 23:15:44,952 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) [2022-03-17 23:15:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1092 transitions. [2022-03-17 23:15:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 23:15:44,953 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:44,954 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:44,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 23:15:44,954 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:44,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1509958495, now seen corresponding path program 1 times [2022-03-17 23:15:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:44,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816635991] [2022-03-17 23:15:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:44,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:15:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:45,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816635991] [2022-03-17 23:15:45,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816635991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:45,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:45,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:45,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101027027] [2022-03-17 23:15:45,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:45,084 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:45,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:45,084 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) [2022-03-17 23:15:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:45,911 INFO L93 Difference]: Finished difference Result 880 states and 1173 transitions. [2022-03-17 23:15:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:15:45,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-03-17 23:15:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:45,914 INFO L225 Difference]: With dead ends: 880 [2022-03-17 23:15:45,914 INFO L226 Difference]: Without dead ends: 804 [2022-03-17 23:15:45,916 INFO L911 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 [2022-03-17 23:15:45,917 INFO L912 BasicCegarLoop]: 486 mSDtfsCounter, 730 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:45,917 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 878 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:15:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-17 23:15:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 775. [2022-03-17 23:15:45,952 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) [2022-03-17 23:15:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1041 transitions. [2022-03-17 23:15:45,954 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1041 transitions. Word has length 46 [2022-03-17 23:15:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:45,954 INFO L478 AbstractCegarLoop]: Abstraction has 775 states and 1041 transitions. [2022-03-17 23:15:45,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 23:15:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1041 transitions. [2022-03-17 23:15:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 23:15:45,955 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:45,955 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:45,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 23:15:45,956 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -214129706, now seen corresponding path program 1 times [2022-03-17 23:15:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818552232] [2022-03-17 23:15:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 23:15:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:46,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:46,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818552232] [2022-03-17 23:15:46,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818552232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:46,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:46,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 23:15:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655628147] [2022-03-17 23:15:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:46,055 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:15:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:15:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:15:46,056 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) [2022-03-17 23:15:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:46,900 INFO L93 Difference]: Finished difference Result 1134 states and 1535 transitions. [2022-03-17 23:15:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:15:46,909 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 [2022-03-17 23:15:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:46,913 INFO L225 Difference]: With dead ends: 1134 [2022-03-17 23:15:46,913 INFO L226 Difference]: Without dead ends: 1131 [2022-03-17 23:15:46,913 INFO L911 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 [2022-03-17 23:15:46,914 INFO L912 BasicCegarLoop]: 533 mSDtfsCounter, 583 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:46,915 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 782 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:15:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-17 23:15:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 888. [2022-03-17 23:15:46,970 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) [2022-03-17 23:15:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1195 transitions. [2022-03-17 23:15:46,973 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1195 transitions. Word has length 47 [2022-03-17 23:15:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:46,973 INFO L478 AbstractCegarLoop]: Abstraction has 888 states and 1195 transitions. [2022-03-17 23:15:46,973 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) [2022-03-17 23:15:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1195 transitions. [2022-03-17 23:15:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 23:15:46,974 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:46,974 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:46,974 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 23:15:46,975 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash 530917733, now seen corresponding path program 1 times [2022-03-17 23:15:46,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:46,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474395324] [2022-03-17 23:15:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:46,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:15:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:15:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:47,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474395324] [2022-03-17 23:15:47,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474395324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:47,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:47,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:47,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824669967] [2022-03-17 23:15:47,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:47,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:47,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:47,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:47,117 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) [2022-03-17 23:15:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:48,338 INFO L93 Difference]: Finished difference Result 933 states and 1248 transitions. [2022-03-17 23:15:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:15:48,338 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 [2022-03-17 23:15:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:48,341 INFO L225 Difference]: With dead ends: 933 [2022-03-17 23:15:48,341 INFO L226 Difference]: Without dead ends: 915 [2022-03-17 23:15:48,342 INFO L911 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 [2022-03-17 23:15:48,342 INFO L912 BasicCegarLoop]: 448 mSDtfsCounter, 308 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:48,342 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1261 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:15:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-03-17 23:15:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 886. [2022-03-17 23:15:48,386 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) [2022-03-17 23:15:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1191 transitions. [2022-03-17 23:15:48,388 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1191 transitions. Word has length 47 [2022-03-17 23:15:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:48,388 INFO L478 AbstractCegarLoop]: Abstraction has 886 states and 1191 transitions. [2022-03-17 23:15:48,388 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) [2022-03-17 23:15:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1191 transitions. [2022-03-17 23:15:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-17 23:15:48,389 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:48,389 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:48,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 23:15:48,390 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1920468263, now seen corresponding path program 1 times [2022-03-17 23:15:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020277236] [2022-03-17 23:15:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 23:15:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:48,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020277236] [2022-03-17 23:15:48,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020277236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:48,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:48,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471664718] [2022-03-17 23:15:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:48,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:48,565 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) [2022-03-17 23:15:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:50,153 INFO L93 Difference]: Finished difference Result 1483 states and 1950 transitions. [2022-03-17 23:15:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:50,154 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 [2022-03-17 23:15:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:50,157 INFO L225 Difference]: With dead ends: 1483 [2022-03-17 23:15:50,157 INFO L226 Difference]: Without dead ends: 936 [2022-03-17 23:15:50,158 INFO L911 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 [2022-03-17 23:15:50,158 INFO L912 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 [2022-03-17 23:15:50,159 INFO L913 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] [2022-03-17 23:15:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-17 23:15:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 877. [2022-03-17 23:15:50,203 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) [2022-03-17 23:15:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2022-03-17 23:15:50,205 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 48 [2022-03-17 23:15:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:50,205 INFO L478 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2022-03-17 23:15:50,205 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) [2022-03-17 23:15:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2022-03-17 23:15:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 23:15:50,206 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:50,206 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:50,206 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 23:15:50,206 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:50,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1683726876, now seen corresponding path program 1 times [2022-03-17 23:15:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577340393] [2022-03-17 23:15:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:50,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577340393] [2022-03-17 23:15:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577340393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:50,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:15:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775571996] [2022-03-17 23:15:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:50,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:15:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:15:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:15:50,364 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) [2022-03-17 23:15:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:51,717 INFO L93 Difference]: Finished difference Result 1151 states and 1528 transitions. [2022-03-17 23:15:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-17 23:15:51,717 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 [2022-03-17 23:15:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:51,721 INFO L225 Difference]: With dead ends: 1151 [2022-03-17 23:15:51,721 INFO L226 Difference]: Without dead ends: 1075 [2022-03-17 23:15:51,722 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-03-17 23:15:51,722 INFO L912 BasicCegarLoop]: 545 mSDtfsCounter, 1640 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:51,722 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 1333 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-03-17 23:15:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 932. [2022-03-17 23:15:51,773 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) [2022-03-17 23:15:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1243 transitions. [2022-03-17 23:15:51,775 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1243 transitions. Word has length 50 [2022-03-17 23:15:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:51,776 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1243 transitions. [2022-03-17 23:15:51,776 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) [2022-03-17 23:15:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1243 transitions. [2022-03-17 23:15:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 23:15:51,777 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:51,777 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:51,777 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 23:15:51,777 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -415030459, now seen corresponding path program 1 times [2022-03-17 23:15:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:51,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847505238] [2022-03-17 23:15:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:15:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:51,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847505238] [2022-03-17 23:15:51,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847505238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:51,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:51,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722973411] [2022-03-17 23:15:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:51,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:51,936 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) [2022-03-17 23:15:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:53,044 INFO L93 Difference]: Finished difference Result 979 states and 1296 transitions. [2022-03-17 23:15:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-17 23:15:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:53,048 INFO L225 Difference]: With dead ends: 979 [2022-03-17 23:15:53,048 INFO L226 Difference]: Without dead ends: 959 [2022-03-17 23:15:53,048 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:15:53,048 INFO L912 BasicCegarLoop]: 452 mSDtfsCounter, 620 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:53,049 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1522 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:53,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-17 23:15:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 932. [2022-03-17 23:15:53,101 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) [2022-03-17 23:15:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1231 transitions. [2022-03-17 23:15:53,104 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1231 transitions. Word has length 50 [2022-03-17 23:15:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:53,104 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1231 transitions. [2022-03-17 23:15:53,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 23:15:53,104 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1231 transitions. [2022-03-17 23:15:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:15:53,106 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:53,106 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:53,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 23:15:53,106 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash 527542300, now seen corresponding path program 1 times [2022-03-17 23:15:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316774647] [2022-03-17 23:15:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-17 23:15:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:53,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316774647] [2022-03-17 23:15:53,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316774647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:53,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:53,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:15:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908196711] [2022-03-17 23:15:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:53,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:15:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:15:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:15:53,229 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) [2022-03-17 23:15:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:54,244 INFO L93 Difference]: Finished difference Result 1041 states and 1345 transitions. [2022-03-17 23:15:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:54,245 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 [2022-03-17 23:15:54,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:54,267 INFO L225 Difference]: With dead ends: 1041 [2022-03-17 23:15:54,267 INFO L226 Difference]: Without dead ends: 685 [2022-03-17 23:15:54,268 INFO L911 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 [2022-03-17 23:15:54,268 INFO L912 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 [2022-03-17 23:15:54,269 INFO L913 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] [2022-03-17 23:15:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-03-17 23:15:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 623. [2022-03-17 23:15:54,337 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) [2022-03-17 23:15:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 791 transitions. [2022-03-17 23:15:54,338 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 791 transitions. Word has length 52 [2022-03-17 23:15:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:54,338 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 791 transitions. [2022-03-17 23:15:54,338 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) [2022-03-17 23:15:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 791 transitions. [2022-03-17 23:15:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 23:15:54,344 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:54,344 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:54,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-17 23:15:54,344 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:54,344 INFO L85 PathProgramCache]: Analyzing trace with hash 868088371, now seen corresponding path program 1 times [2022-03-17 23:15:54,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:54,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283197933] [2022-03-17 23:15:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:54,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:15:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283197933] [2022-03-17 23:15:54,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283197933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:54,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:54,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996722172] [2022-03-17 23:15:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:54,560 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:54,561 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) [2022-03-17 23:15:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:55,592 INFO L93 Difference]: Finished difference Result 673 states and 848 transitions. [2022-03-17 23:15:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:15:55,592 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 [2022-03-17 23:15:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:55,594 INFO L225 Difference]: With dead ends: 673 [2022-03-17 23:15:55,594 INFO L226 Difference]: Without dead ends: 645 [2022-03-17 23:15:55,595 INFO L911 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 [2022-03-17 23:15:55,595 INFO L912 BasicCegarLoop]: 439 mSDtfsCounter, 725 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:55,596 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1493 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:15:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-03-17 23:15:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 613. [2022-03-17 23:15:55,631 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) [2022-03-17 23:15:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 776 transitions. [2022-03-17 23:15:55,632 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 776 transitions. Word has length 51 [2022-03-17 23:15:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:55,632 INFO L478 AbstractCegarLoop]: Abstraction has 613 states and 776 transitions. [2022-03-17 23:15:55,633 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) [2022-03-17 23:15:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 776 transitions. [2022-03-17 23:15:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 23:15:55,634 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:55,634 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:55,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-17 23:15:55,634 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1730699339, now seen corresponding path program 1 times [2022-03-17 23:15:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:55,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880491458] [2022-03-17 23:15:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:15:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:55,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880491458] [2022-03-17 23:15:55,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880491458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:55,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:55,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:15:55,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123954494] [2022-03-17 23:15:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:55,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:15:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:15:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:15:55,779 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) [2022-03-17 23:15:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:57,134 INFO L93 Difference]: Finished difference Result 669 states and 843 transitions. [2022-03-17 23:15:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:15:57,135 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 [2022-03-17 23:15:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:57,137 INFO L225 Difference]: With dead ends: 669 [2022-03-17 23:15:57,137 INFO L226 Difference]: Without dead ends: 647 [2022-03-17 23:15:57,138 INFO L911 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 [2022-03-17 23:15:57,138 INFO L912 BasicCegarLoop]: 400 mSDtfsCounter, 418 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:15:57,138 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1022 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:15:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-03-17 23:15:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 616. [2022-03-17 23:15:57,183 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) [2022-03-17 23:15:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 779 transitions. [2022-03-17 23:15:57,185 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 779 transitions. Word has length 51 [2022-03-17 23:15:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:57,185 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 779 transitions. [2022-03-17 23:15:57,185 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) [2022-03-17 23:15:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 779 transitions. [2022-03-17 23:15:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:15:57,186 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:57,186 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:57,186 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-17 23:15:57,186 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash -585236833, now seen corresponding path program 1 times [2022-03-17 23:15:57,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:57,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072522769] [2022-03-17 23:15:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072522769] [2022-03-17 23:15:57,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072522769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:57,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:57,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:15:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672567930] [2022-03-17 23:15:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:57,359 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:15:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:15:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:15:57,359 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) [2022-03-17 23:15:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:15:58,212 INFO L93 Difference]: Finished difference Result 1050 states and 1349 transitions. [2022-03-17 23:15:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:15:58,213 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 [2022-03-17 23:15:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:15:58,215 INFO L225 Difference]: With dead ends: 1050 [2022-03-17 23:15:58,215 INFO L226 Difference]: Without dead ends: 676 [2022-03-17 23:15:58,216 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:15:58,216 INFO L912 BasicCegarLoop]: 397 mSDtfsCounter, 1298 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-17 23:15:58,216 INFO L913 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] [2022-03-17 23:15:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-03-17 23:15:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 627. [2022-03-17 23:15:58,257 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) [2022-03-17 23:15:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 795 transitions. [2022-03-17 23:15:58,258 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 795 transitions. Word has length 52 [2022-03-17 23:15:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:15:58,259 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 795 transitions. [2022-03-17 23:15:58,259 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) [2022-03-17 23:15:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 795 transitions. [2022-03-17 23:15:58,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:15:58,260 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:15:58,260 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:15:58,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-17 23:15:58,260 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:15:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:15:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 768072864, now seen corresponding path program 1 times [2022-03-17 23:15:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:15:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217111366] [2022-03-17 23:15:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:15:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:15:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:15:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:15:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:15:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:15:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:15:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:15:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:15:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217111366] [2022-03-17 23:15:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217111366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:15:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:15:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:15:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18165484] [2022-03-17 23:15:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:15:58,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:15:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:15:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:15:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:15:58,431 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) [2022-03-17 23:16:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:00,017 INFO L93 Difference]: Finished difference Result 749 states and 943 transitions. [2022-03-17 23:16:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:00,017 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 [2022-03-17 23:16:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:00,020 INFO L225 Difference]: With dead ends: 749 [2022-03-17 23:16:00,020 INFO L226 Difference]: Without dead ends: 670 [2022-03-17 23:16:00,020 INFO L911 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 [2022-03-17 23:16:00,021 INFO L912 BasicCegarLoop]: 399 mSDtfsCounter, 653 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:00,021 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1221 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 23:16:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-17 23:16:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 620. [2022-03-17 23:16:00,063 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) [2022-03-17 23:16:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 784 transitions. [2022-03-17 23:16:00,065 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 784 transitions. Word has length 52 [2022-03-17 23:16:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:00,065 INFO L478 AbstractCegarLoop]: Abstraction has 620 states and 784 transitions. [2022-03-17 23:16:00,065 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) [2022-03-17 23:16:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 784 transitions. [2022-03-17 23:16:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:16:00,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:00,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:00,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-17 23:16:00,067 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1124310208, now seen corresponding path program 1 times [2022-03-17 23:16:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:00,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071938231] [2022-03-17 23:16:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:00,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:00,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071938231] [2022-03-17 23:16:00,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071938231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:00,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:00,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:16:00,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808213950] [2022-03-17 23:16:00,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:00,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:16:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:16:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:16:00,203 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) [2022-03-17 23:16:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:01,498 INFO L93 Difference]: Finished difference Result 815 states and 1051 transitions. [2022-03-17 23:16:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:16:01,499 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 [2022-03-17 23:16:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:01,501 INFO L225 Difference]: With dead ends: 815 [2022-03-17 23:16:01,501 INFO L226 Difference]: Without dead ends: 738 [2022-03-17 23:16:01,501 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:01,502 INFO L912 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:01,502 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1030 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:16:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-03-17 23:16:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 575. [2022-03-17 23:16:01,541 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) [2022-03-17 23:16:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 731 transitions. [2022-03-17 23:16:01,542 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 731 transitions. Word has length 52 [2022-03-17 23:16:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:01,542 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 731 transitions. [2022-03-17 23:16:01,542 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) [2022-03-17 23:16:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 731 transitions. [2022-03-17 23:16:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 23:16:01,543 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:01,543 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:01,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-17 23:16:01,543 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 525399217, now seen corresponding path program 1 times [2022-03-17 23:16:01,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:01,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199610500] [2022-03-17 23:16:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:01,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:01,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199610500] [2022-03-17 23:16:01,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199610500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:01,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:01,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:01,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106385798] [2022-03-17 23:16:01,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:01,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:01,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:01,735 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) [2022-03-17 23:16:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:02,794 INFO L93 Difference]: Finished difference Result 638 states and 818 transitions. [2022-03-17 23:16:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:02,794 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 [2022-03-17 23:16:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:02,796 INFO L225 Difference]: With dead ends: 638 [2022-03-17 23:16:02,797 INFO L226 Difference]: Without dead ends: 634 [2022-03-17 23:16:02,797 INFO L911 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 [2022-03-17 23:16:02,797 INFO L912 BasicCegarLoop]: 410 mSDtfsCounter, 520 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:02,797 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1714 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-17 23:16:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 592. [2022-03-17 23:16:02,838 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) [2022-03-17 23:16:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 755 transitions. [2022-03-17 23:16:02,839 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 755 transitions. Word has length 53 [2022-03-17 23:16:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:02,839 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 755 transitions. [2022-03-17 23:16:02,839 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) [2022-03-17 23:16:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 755 transitions. [2022-03-17 23:16:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 23:16:02,840 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:02,840 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:02,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-17 23:16:02,840 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 525430961, now seen corresponding path program 1 times [2022-03-17 23:16:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:02,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13167858] [2022-03-17 23:16:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13167858] [2022-03-17 23:16:03,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13167858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:03,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:03,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:03,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777291666] [2022-03-17 23:16:03,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:03,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:03,028 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) [2022-03-17 23:16:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:04,002 INFO L93 Difference]: Finished difference Result 626 states and 794 transitions. [2022-03-17 23:16:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:04,003 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 [2022-03-17 23:16:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:04,005 INFO L225 Difference]: With dead ends: 626 [2022-03-17 23:16:04,005 INFO L226 Difference]: Without dead ends: 611 [2022-03-17 23:16:04,005 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:04,006 INFO L912 BasicCegarLoop]: 414 mSDtfsCounter, 559 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-17 23:16:04,006 INFO L913 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] [2022-03-17 23:16:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-03-17 23:16:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 589. [2022-03-17 23:16:04,045 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) [2022-03-17 23:16:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 751 transitions. [2022-03-17 23:16:04,046 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 751 transitions. Word has length 53 [2022-03-17 23:16:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:04,046 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 751 transitions. [2022-03-17 23:16:04,046 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) [2022-03-17 23:16:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 751 transitions. [2022-03-17 23:16:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-17 23:16:04,047 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:04,047 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:04,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-17 23:16:04,047 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1791629129, now seen corresponding path program 1 times [2022-03-17 23:16:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:04,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921252872] [2022-03-17 23:16:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 23:16:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:04,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:04,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921252872] [2022-03-17 23:16:04,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921252872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:04,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:04,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196514147] [2022-03-17 23:16:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:04,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:04,204 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) [2022-03-17 23:16:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:04,961 INFO L93 Difference]: Finished difference Result 624 states and 790 transitions. [2022-03-17 23:16:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:04,962 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 [2022-03-17 23:16:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:04,964 INFO L225 Difference]: With dead ends: 624 [2022-03-17 23:16:04,979 INFO L226 Difference]: Without dead ends: 596 [2022-03-17 23:16:04,980 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:04,980 INFO L912 BasicCegarLoop]: 408 mSDtfsCounter, 604 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:04,980 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1653 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-03-17 23:16:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 577. [2022-03-17 23:16:05,019 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) [2022-03-17 23:16:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 735 transitions. [2022-03-17 23:16:05,020 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 735 transitions. Word has length 55 [2022-03-17 23:16:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:05,020 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 735 transitions. [2022-03-17 23:16:05,020 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) [2022-03-17 23:16:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 735 transitions. [2022-03-17 23:16:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-17 23:16:05,021 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:05,021 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:05,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-17 23:16:05,021 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:05,022 INFO L85 PathProgramCache]: Analyzing trace with hash 310114016, now seen corresponding path program 1 times [2022-03-17 23:16:05,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:05,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504108621] [2022-03-17 23:16:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:05,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504108621] [2022-03-17 23:16:05,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504108621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:05,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:05,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662193581] [2022-03-17 23:16:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:05,192 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:05,192 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) [2022-03-17 23:16:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:06,317 INFO L93 Difference]: Finished difference Result 746 states and 969 transitions. [2022-03-17 23:16:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:06,317 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 [2022-03-17 23:16:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:06,319 INFO L225 Difference]: With dead ends: 746 [2022-03-17 23:16:06,320 INFO L226 Difference]: Without dead ends: 728 [2022-03-17 23:16:06,320 INFO L911 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 [2022-03-17 23:16:06,320 INFO L912 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 [2022-03-17 23:16:06,321 INFO L913 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] [2022-03-17 23:16:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-17 23:16:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 561. [2022-03-17 23:16:06,363 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) [2022-03-17 23:16:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 711 transitions. [2022-03-17 23:16:06,364 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 711 transitions. Word has length 54 [2022-03-17 23:16:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:06,364 INFO L478 AbstractCegarLoop]: Abstraction has 561 states and 711 transitions. [2022-03-17 23:16:06,365 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) [2022-03-17 23:16:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 711 transitions. [2022-03-17 23:16:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 23:16:06,365 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:06,365 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:06,365 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-17 23:16:06,366 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1381037997, now seen corresponding path program 1 times [2022-03-17 23:16:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:06,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988978322] [2022-03-17 23:16:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-17 23:16:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-17 23:16:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:06,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:06,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988978322] [2022-03-17 23:16:06,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988978322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 23:16:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821539518] [2022-03-17 23:16:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:06,528 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 23:16:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 23:16:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-17 23:16:06,529 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) [2022-03-17 23:16:07,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:07,130 INFO L93 Difference]: Finished difference Result 898 states and 1149 transitions. [2022-03-17 23:16:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:16:07,130 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 [2022-03-17 23:16:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:07,132 INFO L225 Difference]: With dead ends: 898 [2022-03-17 23:16:07,132 INFO L226 Difference]: Without dead ends: 589 [2022-03-17 23:16:07,133 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:07,133 INFO L912 BasicCegarLoop]: 386 mSDtfsCounter, 436 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:07,133 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 800 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:16:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-03-17 23:16:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 566. [2022-03-17 23:16:07,174 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) [2022-03-17 23:16:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 717 transitions. [2022-03-17 23:16:07,175 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 717 transitions. Word has length 61 [2022-03-17 23:16:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:07,175 INFO L478 AbstractCegarLoop]: Abstraction has 566 states and 717 transitions. [2022-03-17 23:16:07,175 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) [2022-03-17 23:16:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 717 transitions. [2022-03-17 23:16:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 23:16:07,176 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:07,176 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:07,176 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-17 23:16:07,176 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1616264812, now seen corresponding path program 1 times [2022-03-17 23:16:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:07,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030351707] [2022-03-17 23:16:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:07,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-17 23:16:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:07,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030351707] [2022-03-17 23:16:07,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030351707] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:07,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:07,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335208287] [2022-03-17 23:16:07,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:07,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:07,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:07,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:07,383 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) [2022-03-17 23:16:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:08,090 INFO L93 Difference]: Finished difference Result 852 states and 1088 transitions. [2022-03-17 23:16:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:16:08,090 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 [2022-03-17 23:16:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:08,093 INFO L225 Difference]: With dead ends: 852 [2022-03-17 23:16:08,093 INFO L226 Difference]: Without dead ends: 538 [2022-03-17 23:16:08,094 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:08,094 INFO L912 BasicCegarLoop]: 388 mSDtfsCounter, 775 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:08,094 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1072 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-17 23:16:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 511. [2022-03-17 23:16:08,140 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) [2022-03-17 23:16:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2022-03-17 23:16:08,141 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 64 [2022-03-17 23:16:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:08,141 INFO L478 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2022-03-17 23:16:08,141 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) [2022-03-17 23:16:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2022-03-17 23:16:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-17 23:16:08,143 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:08,143 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:08,143 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-17 23:16:08,143 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1336270132, now seen corresponding path program 1 times [2022-03-17 23:16:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121299342] [2022-03-17 23:16:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 23:16:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:08,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121299342] [2022-03-17 23:16:08,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121299342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:08,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:08,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647770365] [2022-03-17 23:16:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:08,301 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:08,302 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) [2022-03-17 23:16:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:09,307 INFO L93 Difference]: Finished difference Result 545 states and 678 transitions. [2022-03-17 23:16:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:09,307 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 [2022-03-17 23:16:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:09,309 INFO L225 Difference]: With dead ends: 545 [2022-03-17 23:16:09,309 INFO L226 Difference]: Without dead ends: 524 [2022-03-17 23:16:09,309 INFO L911 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 [2022-03-17 23:16:09,309 INFO L912 BasicCegarLoop]: 367 mSDtfsCounter, 518 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:09,309 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1065 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:16:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-03-17 23:16:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 508. [2022-03-17 23:16:09,347 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) [2022-03-17 23:16:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 635 transitions. [2022-03-17 23:16:09,348 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 635 transitions. Word has length 59 [2022-03-17 23:16:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:09,349 INFO L478 AbstractCegarLoop]: Abstraction has 508 states and 635 transitions. [2022-03-17 23:16:09,349 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) [2022-03-17 23:16:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 635 transitions. [2022-03-17 23:16:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 23:16:09,349 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:09,349 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:09,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-17 23:16:09,350 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1613674778, now seen corresponding path program 1 times [2022-03-17 23:16:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235281926] [2022-03-17 23:16:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-17 23:16:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:09,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235281926] [2022-03-17 23:16:09,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235281926] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:09,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:09,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:09,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127298558] [2022-03-17 23:16:09,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:09,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:09,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:09,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:09,494 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) [2022-03-17 23:16:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:10,384 INFO L93 Difference]: Finished difference Result 538 states and 669 transitions. [2022-03-17 23:16:10,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:16:10,384 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 [2022-03-17 23:16:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:10,386 INFO L225 Difference]: With dead ends: 538 [2022-03-17 23:16:10,386 INFO L226 Difference]: Without dead ends: 520 [2022-03-17 23:16:10,386 INFO L911 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 [2022-03-17 23:16:10,387 INFO L912 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 [2022-03-17 23:16:10,387 INFO L913 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] [2022-03-17 23:16:10,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-17 23:16:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 504. [2022-03-17 23:16:10,424 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) [2022-03-17 23:16:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 629 transitions. [2022-03-17 23:16:10,425 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 629 transitions. Word has length 58 [2022-03-17 23:16:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:10,426 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 629 transitions. [2022-03-17 23:16:10,426 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) [2022-03-17 23:16:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 629 transitions. [2022-03-17 23:16:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 23:16:10,426 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:10,426 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:10,427 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-17 23:16:10,427 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2114727091, now seen corresponding path program 1 times [2022-03-17 23:16:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:10,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203527281] [2022-03-17 23:16:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 23:16:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:10,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203527281] [2022-03-17 23:16:10,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203527281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:10,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:10,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954403490] [2022-03-17 23:16:10,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:10,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:10,596 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) [2022-03-17 23:16:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:11,607 INFO L93 Difference]: Finished difference Result 539 states and 669 transitions. [2022-03-17 23:16:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:11,607 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 [2022-03-17 23:16:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:11,609 INFO L225 Difference]: With dead ends: 539 [2022-03-17 23:16:11,609 INFO L226 Difference]: Without dead ends: 515 [2022-03-17 23:16:11,610 INFO L911 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 [2022-03-17 23:16:11,610 INFO L912 BasicCegarLoop]: 362 mSDtfsCounter, 453 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:11,610 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 914 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-03-17 23:16:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 499. [2022-03-17 23:16:11,647 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) [2022-03-17 23:16:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 621 transitions. [2022-03-17 23:16:11,648 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 621 transitions. Word has length 60 [2022-03-17 23:16:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:11,648 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 621 transitions. [2022-03-17 23:16:11,648 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) [2022-03-17 23:16:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 621 transitions. [2022-03-17 23:16:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:16:11,649 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:11,649 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:11,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-17 23:16:11,649 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1861314870, now seen corresponding path program 1 times [2022-03-17 23:16:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:11,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802673803] [2022-03-17 23:16:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-17 23:16:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802673803] [2022-03-17 23:16:11,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802673803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:11,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:11,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187672988] [2022-03-17 23:16:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:11,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:11,817 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) [2022-03-17 23:16:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:12,691 INFO L93 Difference]: Finished difference Result 780 states and 980 transitions. [2022-03-17 23:16:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:12,691 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 [2022-03-17 23:16:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:12,693 INFO L225 Difference]: With dead ends: 780 [2022-03-17 23:16:12,693 INFO L226 Difference]: Without dead ends: 521 [2022-03-17 23:16:12,694 INFO L911 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 [2022-03-17 23:16:12,694 INFO L912 BasicCegarLoop]: 357 mSDtfsCounter, 745 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:12,694 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1040 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-03-17 23:16:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 499. [2022-03-17 23:16:12,757 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) [2022-03-17 23:16:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 619 transitions. [2022-03-17 23:16:12,759 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 619 transitions. Word has length 68 [2022-03-17 23:16:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:12,759 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 619 transitions. [2022-03-17 23:16:12,760 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) [2022-03-17 23:16:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 619 transitions. [2022-03-17 23:16:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:12,760 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:12,760 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:12,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-17 23:16:12,761 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1116193296, now seen corresponding path program 1 times [2022-03-17 23:16:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:12,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445002812] [2022-03-17 23:16:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:12,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445002812] [2022-03-17 23:16:12,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445002812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:12,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:12,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 23:16:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976824782] [2022-03-17 23:16:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:12,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:16:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:16:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:16:12,899 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) [2022-03-17 23:16:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:13,819 INFO L93 Difference]: Finished difference Result 611 states and 749 transitions. [2022-03-17 23:16:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:16:13,819 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 [2022-03-17 23:16:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:13,823 INFO L225 Difference]: With dead ends: 611 [2022-03-17 23:16:13,823 INFO L226 Difference]: Without dead ends: 519 [2022-03-17 23:16:13,824 INFO L911 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 [2022-03-17 23:16:13,824 INFO L912 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 [2022-03-17 23:16:13,824 INFO L913 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] [2022-03-17 23:16:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-03-17 23:16:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 503. [2022-03-17 23:16:13,863 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) [2022-03-17 23:16:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 623 transitions. [2022-03-17 23:16:13,864 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 623 transitions. Word has length 63 [2022-03-17 23:16:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:13,864 INFO L478 AbstractCegarLoop]: Abstraction has 503 states and 623 transitions. [2022-03-17 23:16:13,864 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) [2022-03-17 23:16:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 623 transitions. [2022-03-17 23:16:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:13,865 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:13,865 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:13,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-17 23:16:13,865 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -929996240, now seen corresponding path program 1 times [2022-03-17 23:16:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:13,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314062176] [2022-03-17 23:16:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:14,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314062176] [2022-03-17 23:16:14,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314062176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:14,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:14,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454439970] [2022-03-17 23:16:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:14,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:14,028 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) [2022-03-17 23:16:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:14,933 INFO L93 Difference]: Finished difference Result 529 states and 653 transitions. [2022-03-17 23:16:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:14,936 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 [2022-03-17 23:16:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:14,944 INFO L225 Difference]: With dead ends: 529 [2022-03-17 23:16:14,945 INFO L226 Difference]: Without dead ends: 505 [2022-03-17 23:16:14,945 INFO L911 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 [2022-03-17 23:16:14,945 INFO L912 BasicCegarLoop]: 352 mSDtfsCounter, 502 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:14,945 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 991 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:16:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-17 23:16:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 489. [2022-03-17 23:16:14,982 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) [2022-03-17 23:16:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 604 transitions. [2022-03-17 23:16:14,983 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 604 transitions. Word has length 63 [2022-03-17 23:16:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:14,983 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 604 transitions. [2022-03-17 23:16:14,983 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) [2022-03-17 23:16:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 604 transitions. [2022-03-17 23:16:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:14,984 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:14,984 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:14,984 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-17 23:16:14,984 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1704717596, now seen corresponding path program 1 times [2022-03-17 23:16:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:14,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028727743] [2022-03-17 23:16:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-17 23:16:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028727743] [2022-03-17 23:16:15,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028727743] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:15,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:15,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 23:16:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451640983] [2022-03-17 23:16:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:15,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 23:16:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 23:16:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:16:15,135 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) [2022-03-17 23:16:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:16,036 INFO L93 Difference]: Finished difference Result 750 states and 936 transitions. [2022-03-17 23:16:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 23:16:16,036 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 [2022-03-17 23:16:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:16,038 INFO L225 Difference]: With dead ends: 750 [2022-03-17 23:16:16,038 INFO L226 Difference]: Without dead ends: 524 [2022-03-17 23:16:16,039 INFO L911 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 [2022-03-17 23:16:16,039 INFO L912 BasicCegarLoop]: 375 mSDtfsCounter, 435 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:16,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 1372 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 23:16:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-03-17 23:16:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 489. [2022-03-17 23:16:16,078 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) [2022-03-17 23:16:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 602 transitions. [2022-03-17 23:16:16,079 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 602 transitions. Word has length 71 [2022-03-17 23:16:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:16,080 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 602 transitions. [2022-03-17 23:16:16,080 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) [2022-03-17 23:16:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 602 transitions. [2022-03-17 23:16:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 23:16:16,081 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:16,081 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:16,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-17 23:16:16,081 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:16,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1439851345, now seen corresponding path program 1 times [2022-03-17 23:16:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:16,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004120625] [2022-03-17 23:16:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:16,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004120625] [2022-03-17 23:16:16,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004120625] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:16,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:16,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:16,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404243530] [2022-03-17 23:16:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:16,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:16,252 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) [2022-03-17 23:16:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:16,982 INFO L93 Difference]: Finished difference Result 522 states and 640 transitions. [2022-03-17 23:16:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:16,982 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 [2022-03-17 23:16:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:16,984 INFO L225 Difference]: With dead ends: 522 [2022-03-17 23:16:16,984 INFO L226 Difference]: Without dead ends: 501 [2022-03-17 23:16:16,984 INFO L911 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 [2022-03-17 23:16:16,984 INFO L912 BasicCegarLoop]: 369 mSDtfsCounter, 599 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:16,985 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1611 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-03-17 23:16:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 485. [2022-03-17 23:16:17,030 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) [2022-03-17 23:16:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 596 transitions. [2022-03-17 23:16:17,030 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 596 transitions. Word has length 63 [2022-03-17 23:16:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:17,031 INFO L478 AbstractCegarLoop]: Abstraction has 485 states and 596 transitions. [2022-03-17 23:16:17,031 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) [2022-03-17 23:16:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 596 transitions. [2022-03-17 23:16:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 23:16:17,031 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:17,031 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:17,032 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-17 23:16:17,032 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1734732644, now seen corresponding path program 1 times [2022-03-17 23:16:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543422251] [2022-03-17 23:16:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 23:16:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543422251] [2022-03-17 23:16:17,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543422251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:17,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:17,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753348616] [2022-03-17 23:16:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:17,204 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:17,206 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) [2022-03-17 23:16:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:17,985 INFO L93 Difference]: Finished difference Result 512 states and 627 transitions. [2022-03-17 23:16:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:17,985 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 [2022-03-17 23:16:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:17,986 INFO L225 Difference]: With dead ends: 512 [2022-03-17 23:16:17,986 INFO L226 Difference]: Without dead ends: 490 [2022-03-17 23:16:17,987 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:17,987 INFO L912 BasicCegarLoop]: 375 mSDtfsCounter, 425 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:17,987 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1498 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-03-17 23:16:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 474. [2022-03-17 23:16:18,024 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) [2022-03-17 23:16:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 581 transitions. [2022-03-17 23:16:18,025 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 581 transitions. Word has length 64 [2022-03-17 23:16:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:18,025 INFO L478 AbstractCegarLoop]: Abstraction has 474 states and 581 transitions. [2022-03-17 23:16:18,025 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) [2022-03-17 23:16:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 581 transitions. [2022-03-17 23:16:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 23:16:18,026 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:18,026 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:18,026 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-17 23:16:18,026 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash -144637562, now seen corresponding path program 1 times [2022-03-17 23:16:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:18,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854761119] [2022-03-17 23:16:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854761119] [2022-03-17 23:16:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854761119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:18,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:18,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7894186] [2022-03-17 23:16:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:18,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:18,203 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) [2022-03-17 23:16:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:18,836 INFO L93 Difference]: Finished difference Result 507 states and 619 transitions. [2022-03-17 23:16:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:18,837 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 [2022-03-17 23:16:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:18,838 INFO L225 Difference]: With dead ends: 507 [2022-03-17 23:16:18,838 INFO L226 Difference]: Without dead ends: 485 [2022-03-17 23:16:18,838 INFO L911 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 [2022-03-17 23:16:18,839 INFO L912 BasicCegarLoop]: 367 mSDtfsCounter, 455 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:18,839 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1662 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-03-17 23:16:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 469. [2022-03-17 23:16:18,876 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) [2022-03-17 23:16:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 574 transitions. [2022-03-17 23:16:18,878 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 574 transitions. Word has length 64 [2022-03-17 23:16:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:18,878 INFO L478 AbstractCegarLoop]: Abstraction has 469 states and 574 transitions. [2022-03-17 23:16:18,878 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) [2022-03-17 23:16:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 574 transitions. [2022-03-17 23:16:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 23:16:18,879 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:18,879 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:18,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-17 23:16:18,879 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1120155272, now seen corresponding path program 1 times [2022-03-17 23:16:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:18,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290747660] [2022-03-17 23:16:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290747660] [2022-03-17 23:16:19,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290747660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:19,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:19,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921894563] [2022-03-17 23:16:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:19,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:19,039 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) [2022-03-17 23:16:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:19,759 INFO L93 Difference]: Finished difference Result 502 states and 612 transitions. [2022-03-17 23:16:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:19,760 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 [2022-03-17 23:16:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:19,761 INFO L225 Difference]: With dead ends: 502 [2022-03-17 23:16:19,761 INFO L226 Difference]: Without dead ends: 481 [2022-03-17 23:16:19,761 INFO L911 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 [2022-03-17 23:16:19,769 INFO L912 BasicCegarLoop]: 347 mSDtfsCounter, 291 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:19,770 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1534 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-17 23:16:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2022-03-17 23:16:19,817 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) [2022-03-17 23:16:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 568 transitions. [2022-03-17 23:16:19,818 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 568 transitions. Word has length 64 [2022-03-17 23:16:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:19,819 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 568 transitions. [2022-03-17 23:16:19,819 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) [2022-03-17 23:16:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 568 transitions. [2022-03-17 23:16:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-17 23:16:19,843 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:19,843 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:19,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-17 23:16:19,844 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1809242026, now seen corresponding path program 1 times [2022-03-17 23:16:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333863542] [2022-03-17 23:16:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-17 23:16:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333863542] [2022-03-17 23:16:19,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333863542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:19,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 23:16:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327415065] [2022-03-17 23:16:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:19,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:16:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:16:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:16:19,968 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) [2022-03-17 23:16:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:20,838 INFO L93 Difference]: Finished difference Result 878 states and 1082 transitions. [2022-03-17 23:16:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:16:20,838 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 [2022-03-17 23:16:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:20,840 INFO L225 Difference]: With dead ends: 878 [2022-03-17 23:16:20,840 INFO L226 Difference]: Without dead ends: 625 [2022-03-17 23:16:20,841 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:20,841 INFO L912 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 [2022-03-17 23:16:20,841 INFO L913 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] [2022-03-17 23:16:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-17 23:16:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 586. [2022-03-17 23:16:20,900 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) [2022-03-17 23:16:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 716 transitions. [2022-03-17 23:16:20,901 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 716 transitions. Word has length 70 [2022-03-17 23:16:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:20,901 INFO L478 AbstractCegarLoop]: Abstraction has 586 states and 716 transitions. [2022-03-17 23:16:20,901 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) [2022-03-17 23:16:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 716 transitions. [2022-03-17 23:16:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:16:20,902 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:20,902 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:20,902 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-17 23:16:20,903 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1680266649, now seen corresponding path program 1 times [2022-03-17 23:16:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:20,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351715317] [2022-03-17 23:16:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-17 23:16:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351715317] [2022-03-17 23:16:21,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351715317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:21,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:21,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:21,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816950924] [2022-03-17 23:16:21,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:21,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:21,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:21,081 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) [2022-03-17 23:16:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:21,901 INFO L93 Difference]: Finished difference Result 619 states and 755 transitions. [2022-03-17 23:16:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:16:21,901 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 [2022-03-17 23:16:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:21,903 INFO L225 Difference]: With dead ends: 619 [2022-03-17 23:16:21,903 INFO L226 Difference]: Without dead ends: 576 [2022-03-17 23:16:21,903 INFO L911 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 [2022-03-17 23:16:21,903 INFO L912 BasicCegarLoop]: 339 mSDtfsCounter, 447 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:21,903 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1465 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-03-17 23:16:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2022-03-17 23:16:21,951 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) [2022-03-17 23:16:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 684 transitions. [2022-03-17 23:16:21,952 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 684 transitions. Word has length 68 [2022-03-17 23:16:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:21,952 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 684 transitions. [2022-03-17 23:16:21,952 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) [2022-03-17 23:16:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 684 transitions. [2022-03-17 23:16:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-17 23:16:21,953 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:21,953 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:21,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-17 23:16:21,953 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash -815860561, now seen corresponding path program 1 times [2022-03-17 23:16:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:21,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014853278] [2022-03-17 23:16:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 23:16:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-17 23:16:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014853278] [2022-03-17 23:16:22,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014853278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:22,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:22,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713761864] [2022-03-17 23:16:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:22,153 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:22,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:22,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:22,154 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) [2022-03-17 23:16:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:23,253 INFO L93 Difference]: Finished difference Result 589 states and 718 transitions. [2022-03-17 23:16:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-17 23:16:23,254 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 [2022-03-17 23:16:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:23,255 INFO L225 Difference]: With dead ends: 589 [2022-03-17 23:16:23,255 INFO L226 Difference]: Without dead ends: 535 [2022-03-17 23:16:23,256 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:23,256 INFO L912 BasicCegarLoop]: 305 mSDtfsCounter, 287 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:23,258 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 876 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 23:16:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-03-17 23:16:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2022-03-17 23:16:23,298 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) [2022-03-17 23:16:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 632 transitions. [2022-03-17 23:16:23,299 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 632 transitions. Word has length 71 [2022-03-17 23:16:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:23,299 INFO L478 AbstractCegarLoop]: Abstraction has 519 states and 632 transitions. [2022-03-17 23:16:23,299 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) [2022-03-17 23:16:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 632 transitions. [2022-03-17 23:16:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-17 23:16:23,300 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:23,300 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:23,300 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-17 23:16:23,300 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1160220987, now seen corresponding path program 1 times [2022-03-17 23:16:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:23,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91405035] [2022-03-17 23:16:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-17 23:16:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 23:16:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:23,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91405035] [2022-03-17 23:16:23,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91405035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:23,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 23:16:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112808619] [2022-03-17 23:16:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:23,498 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:16:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:16:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-17 23:16:23,498 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) [2022-03-17 23:16:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:24,047 INFO L93 Difference]: Finished difference Result 840 states and 1028 transitions. [2022-03-17 23:16:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:24,048 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 [2022-03-17 23:16:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:24,068 INFO L225 Difference]: With dead ends: 840 [2022-03-17 23:16:24,068 INFO L226 Difference]: Without dead ends: 523 [2022-03-17 23:16:24,069 INFO L911 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 [2022-03-17 23:16:24,069 INFO L912 BasicCegarLoop]: 388 mSDtfsCounter, 724 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:24,069 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 999 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 23:16:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-03-17 23:16:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 501. [2022-03-17 23:16:24,109 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) [2022-03-17 23:16:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 602 transitions. [2022-03-17 23:16:24,109 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 602 transitions. Word has length 82 [2022-03-17 23:16:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:24,110 INFO L478 AbstractCegarLoop]: Abstraction has 501 states and 602 transitions. [2022-03-17 23:16:24,110 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) [2022-03-17 23:16:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 602 transitions. [2022-03-17 23:16:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-17 23:16:24,110 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:24,110 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:24,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-17 23:16:24,111 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash 633938585, now seen corresponding path program 1 times [2022-03-17 23:16:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:24,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187038081] [2022-03-17 23:16:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-17 23:16:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-17 23:16:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:24,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187038081] [2022-03-17 23:16:24,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187038081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:24,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:24,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028592589] [2022-03-17 23:16:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:24,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:24,327 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) [2022-03-17 23:16:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:25,139 INFO L93 Difference]: Finished difference Result 839 states and 1046 transitions. [2022-03-17 23:16:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-17 23:16:25,140 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 [2022-03-17 23:16:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:25,142 INFO L225 Difference]: With dead ends: 839 [2022-03-17 23:16:25,142 INFO L226 Difference]: Without dead ends: 585 [2022-03-17 23:16:25,143 INFO L911 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 [2022-03-17 23:16:25,143 INFO L912 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 [2022-03-17 23:16:25,144 INFO L913 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] [2022-03-17 23:16:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-03-17 23:16:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 465. [2022-03-17 23:16:25,183 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) [2022-03-17 23:16:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2022-03-17 23:16:25,184 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 83 [2022-03-17 23:16:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:25,184 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2022-03-17 23:16:25,184 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) [2022-03-17 23:16:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2022-03-17 23:16:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-17 23:16:25,185 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:25,185 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:25,185 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-17 23:16:25,185 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1833243044, now seen corresponding path program 1 times [2022-03-17 23:16:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:25,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267828122] [2022-03-17 23:16:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:25,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-17 23:16:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:25,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267828122] [2022-03-17 23:16:25,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267828122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:25,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:25,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:16:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712812544] [2022-03-17 23:16:25,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:25,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:16:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:16:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:25,410 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) [2022-03-17 23:16:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:26,219 INFO L93 Difference]: Finished difference Result 526 states and 629 transitions. [2022-03-17 23:16:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:16:26,219 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 [2022-03-17 23:16:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:26,221 INFO L225 Difference]: With dead ends: 526 [2022-03-17 23:16:26,221 INFO L226 Difference]: Without dead ends: 505 [2022-03-17 23:16:26,221 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-03-17 23:16:26,222 INFO L912 BasicCegarLoop]: 289 mSDtfsCounter, 359 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:26,224 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1600 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 23:16:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-17 23:16:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 473. [2022-03-17 23:16:26,263 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) [2022-03-17 23:16:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 566 transitions. [2022-03-17 23:16:26,264 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 566 transitions. Word has length 88 [2022-03-17 23:16:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:26,264 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 566 transitions. [2022-03-17 23:16:26,264 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) [2022-03-17 23:16:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 566 transitions. [2022-03-17 23:16:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-17 23:16:26,265 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:26,265 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:26,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-17 23:16:26,265 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2018356459, now seen corresponding path program 1 times [2022-03-17 23:16:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762655180] [2022-03-17 23:16:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-17 23:16:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:26,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:26,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762655180] [2022-03-17 23:16:26,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762655180] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:26,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:26,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:16:26,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994520237] [2022-03-17 23:16:26,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:26,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:16:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:26,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:16:26,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:26,460 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) [2022-03-17 23:16:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:27,285 INFO L93 Difference]: Finished difference Result 526 states and 628 transitions. [2022-03-17 23:16:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 23:16:27,286 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 [2022-03-17 23:16:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:27,287 INFO L225 Difference]: With dead ends: 526 [2022-03-17 23:16:27,287 INFO L226 Difference]: Without dead ends: 505 [2022-03-17 23:16:27,287 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:27,287 INFO L912 BasicCegarLoop]: 305 mSDtfsCounter, 459 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:27,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1695 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-17 23:16:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2022-03-17 23:16:27,325 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) [2022-03-17 23:16:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2022-03-17 23:16:27,325 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 89 [2022-03-17 23:16:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:27,326 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2022-03-17 23:16:27,326 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) [2022-03-17 23:16:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2022-03-17 23:16:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-17 23:16:27,326 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:27,327 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:27,327 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-17 23:16:27,327 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:27,327 INFO L85 PathProgramCache]: Analyzing trace with hash -72110269, now seen corresponding path program 1 times [2022-03-17 23:16:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:27,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143158764] [2022-03-17 23:16:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 23:16:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-17 23:16:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143158764] [2022-03-17 23:16:27,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143158764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:27,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:27,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024284821] [2022-03-17 23:16:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:27,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:27,501 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) [2022-03-17 23:16:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:28,000 INFO L93 Difference]: Finished difference Result 522 states and 617 transitions. [2022-03-17 23:16:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 23:16:28,001 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 [2022-03-17 23:16:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:28,003 INFO L225 Difference]: With dead ends: 522 [2022-03-17 23:16:28,003 INFO L226 Difference]: Without dead ends: 483 [2022-03-17 23:16:28,003 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:28,004 INFO L912 BasicCegarLoop]: 274 mSDtfsCounter, 331 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:28,004 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1066 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 23:16:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-03-17 23:16:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 459. [2022-03-17 23:16:28,045 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) [2022-03-17 23:16:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 546 transitions. [2022-03-17 23:16:28,045 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 546 transitions. Word has length 98 [2022-03-17 23:16:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:28,046 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 546 transitions. [2022-03-17 23:16:28,046 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) [2022-03-17 23:16:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 546 transitions. [2022-03-17 23:16:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-17 23:16:28,046 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:28,046 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:28,046 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-17 23:16:28,047 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash 221001860, now seen corresponding path program 1 times [2022-03-17 23:16:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:28,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961053933] [2022-03-17 23:16:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 23:16:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 23:16:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:28,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:28,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961053933] [2022-03-17 23:16:28,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961053933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:28,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:28,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 23:16:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382819151] [2022-03-17 23:16:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:28,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 23:16:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 23:16:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:16:28,215 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) [2022-03-17 23:16:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:29,849 INFO L93 Difference]: Finished difference Result 1616 states and 1898 transitions. [2022-03-17 23:16:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-17 23:16:29,849 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 [2022-03-17 23:16:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:29,852 INFO L225 Difference]: With dead ends: 1616 [2022-03-17 23:16:29,852 INFO L226 Difference]: Without dead ends: 1310 [2022-03-17 23:16:29,853 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2022-03-17 23:16:29,854 INFO L912 BasicCegarLoop]: 577 mSDtfsCounter, 1523 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:29,854 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 883 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 23:16:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-03-17 23:16:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1036. [2022-03-17 23:16:29,951 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) [2022-03-17 23:16:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1213 transitions. [2022-03-17 23:16:29,952 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1213 transitions. Word has length 92 [2022-03-17 23:16:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:29,952 INFO L478 AbstractCegarLoop]: Abstraction has 1036 states and 1213 transitions. [2022-03-17 23:16:29,953 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) [2022-03-17 23:16:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1213 transitions. [2022-03-17 23:16:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-17 23:16:29,954 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:29,954 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:29,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-17 23:16:29,954 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 457485908, now seen corresponding path program 1 times [2022-03-17 23:16:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:29,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203057522] [2022-03-17 23:16:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-17 23:16:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-17 23:16:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203057522] [2022-03-17 23:16:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203057522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:30,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:30,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299181926] [2022-03-17 23:16:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:30,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:30,183 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) [2022-03-17 23:16:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:31,169 INFO L93 Difference]: Finished difference Result 1962 states and 2306 transitions. [2022-03-17 23:16:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-17 23:16:31,170 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 [2022-03-17 23:16:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:31,174 INFO L225 Difference]: With dead ends: 1962 [2022-03-17 23:16:31,174 INFO L226 Difference]: Without dead ends: 1897 [2022-03-17 23:16:31,174 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2022-03-17 23:16:31,175 INFO L912 BasicCegarLoop]: 461 mSDtfsCounter, 698 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:31,175 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2060 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2022-03-17 23:16:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1000. [2022-03-17 23:16:31,294 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) [2022-03-17 23:16:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1167 transitions. [2022-03-17 23:16:31,296 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1167 transitions. Word has length 99 [2022-03-17 23:16:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:31,296 INFO L478 AbstractCegarLoop]: Abstraction has 1000 states and 1167 transitions. [2022-03-17 23:16:31,296 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) [2022-03-17 23:16:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1167 transitions. [2022-03-17 23:16:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-17 23:16:31,297 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:31,297 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:31,297 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-17 23:16:31,297 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1879720238, now seen corresponding path program 1 times [2022-03-17 23:16:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:31,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708826518] [2022-03-17 23:16:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 23:16:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 23:16:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 23:16:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:31,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708826518] [2022-03-17 23:16:31,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708826518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:31,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-17 23:16:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237257465] [2022-03-17 23:16:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:31,473 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 23:16:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 23:16:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:16:31,474 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) [2022-03-17 23:16:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:32,361 INFO L93 Difference]: Finished difference Result 1010 states and 1176 transitions. [2022-03-17 23:16:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 23:16:32,362 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 [2022-03-17 23:16:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:32,364 INFO L225 Difference]: With dead ends: 1010 [2022-03-17 23:16:32,364 INFO L226 Difference]: Without dead ends: 804 [2022-03-17 23:16:32,364 INFO L911 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 [2022-03-17 23:16:32,365 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 602 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:32,365 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 568 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-17 23:16:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 796. [2022-03-17 23:16:32,452 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) [2022-03-17 23:16:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 930 transitions. [2022-03-17 23:16:32,453 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 930 transitions. Word has length 93 [2022-03-17 23:16:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:32,453 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 930 transitions. [2022-03-17 23:16:32,453 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) [2022-03-17 23:16:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 930 transitions. [2022-03-17 23:16:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-17 23:16:32,454 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:32,454 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:32,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-17 23:16:32,454 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1426092271, now seen corresponding path program 1 times [2022-03-17 23:16:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:32,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736658678] [2022-03-17 23:16:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-17 23:16:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:32,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736658678] [2022-03-17 23:16:32,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736658678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:32,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:32,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219449487] [2022-03-17 23:16:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:32,699 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:32,699 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) [2022-03-17 23:16:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:33,255 INFO L93 Difference]: Finished difference Result 1048 states and 1235 transitions. [2022-03-17 23:16:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 23:16:33,255 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 [2022-03-17 23:16:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:33,257 INFO L225 Difference]: With dead ends: 1048 [2022-03-17 23:16:33,257 INFO L226 Difference]: Without dead ends: 834 [2022-03-17 23:16:33,258 INFO L911 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 [2022-03-17 23:16:33,258 INFO L912 BasicCegarLoop]: 179 mSDtfsCounter, 337 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:33,258 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1070 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 23:16:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-03-17 23:16:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 814. [2022-03-17 23:16:33,352 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) [2022-03-17 23:16:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 942 transitions. [2022-03-17 23:16:33,353 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 942 transitions. Word has length 104 [2022-03-17 23:16:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:33,353 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 942 transitions. [2022-03-17 23:16:33,353 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) [2022-03-17 23:16:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 942 transitions. [2022-03-17 23:16:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-17 23:16:33,354 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:33,355 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:33,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-17 23:16:33,355 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1466232135, now seen corresponding path program 1 times [2022-03-17 23:16:33,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712035891] [2022-03-17 23:16:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:33,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-17 23:16:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-17 23:16:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-17 23:16:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:33,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712035891] [2022-03-17 23:16:33,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712035891] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:33,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:33,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-17 23:16:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617603563] [2022-03-17 23:16:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:33,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 23:16:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 23:16:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:16:33,514 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) [2022-03-17 23:16:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:33,869 INFO L93 Difference]: Finished difference Result 867 states and 993 transitions. [2022-03-17 23:16:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 23:16:33,869 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 [2022-03-17 23:16:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:33,880 INFO L225 Difference]: With dead ends: 867 [2022-03-17 23:16:33,880 INFO L226 Difference]: Without dead ends: 717 [2022-03-17 23:16:33,880 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-03-17 23:16:33,881 INFO L912 BasicCegarLoop]: 181 mSDtfsCounter, 153 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:33,886 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 897 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 23:16:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-03-17 23:16:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 449. [2022-03-17 23:16:33,950 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) [2022-03-17 23:16:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 499 transitions. [2022-03-17 23:16:33,951 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 499 transitions. Word has length 113 [2022-03-17 23:16:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:33,951 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 499 transitions. [2022-03-17 23:16:33,951 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) [2022-03-17 23:16:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 499 transitions. [2022-03-17 23:16:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-17 23:16:33,952 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:33,952 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:33,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-17 23:16:33,952 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -165727650, now seen corresponding path program 1 times [2022-03-17 23:16:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183536713] [2022-03-17 23:16:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-17 23:16:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 23:16:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:34,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183536713] [2022-03-17 23:16:34,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183536713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:34,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:34,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001551601] [2022-03-17 23:16:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:34,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:34,154 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) [2022-03-17 23:16:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:34,544 INFO L93 Difference]: Finished difference Result 520 states and 576 transitions. [2022-03-17 23:16:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:34,545 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 [2022-03-17 23:16:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:34,546 INFO L225 Difference]: With dead ends: 520 [2022-03-17 23:16:34,546 INFO L226 Difference]: Without dead ends: 477 [2022-03-17 23:16:34,546 INFO L911 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 [2022-03-17 23:16:34,546 INFO L912 BasicCegarLoop]: 175 mSDtfsCounter, 183 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-17 23:16:34,547 INFO L913 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] [2022-03-17 23:16:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-03-17 23:16:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 457. [2022-03-17 23:16:34,604 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) [2022-03-17 23:16:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 507 transitions. [2022-03-17 23:16:34,604 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 507 transitions. Word has length 120 [2022-03-17 23:16:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:34,604 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 507 transitions. [2022-03-17 23:16:34,605 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) [2022-03-17 23:16:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 507 transitions. [2022-03-17 23:16:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-17 23:16:34,605 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:34,605 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:34,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-17 23:16:34,606 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1709722050, now seen corresponding path program 1 times [2022-03-17 23:16:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:34,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978862554] [2022-03-17 23:16:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-17 23:16:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 23:16:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:16:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:34,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978862554] [2022-03-17 23:16:34,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978862554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:34,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:34,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668838347] [2022-03-17 23:16:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:34,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:34,824 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) [2022-03-17 23:16:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:35,177 INFO L93 Difference]: Finished difference Result 612 states and 686 transitions. [2022-03-17 23:16:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:35,177 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 [2022-03-17 23:16:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:35,178 INFO L225 Difference]: With dead ends: 612 [2022-03-17 23:16:35,178 INFO L226 Difference]: Without dead ends: 469 [2022-03-17 23:16:35,179 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:35,179 INFO L912 BasicCegarLoop]: 174 mSDtfsCounter, 274 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:35,179 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 743 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:16:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-03-17 23:16:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2022-03-17 23:16:35,238 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) [2022-03-17 23:16:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 505 transitions. [2022-03-17 23:16:35,239 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 505 transitions. Word has length 120 [2022-03-17 23:16:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:35,239 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 505 transitions. [2022-03-17 23:16:35,239 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) [2022-03-17 23:16:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 505 transitions. [2022-03-17 23:16:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-03-17 23:16:35,240 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:35,240 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:16:35,240 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-17 23:16:35,241 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash -232533850, now seen corresponding path program 1 times [2022-03-17 23:16:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780423208] [2022-03-17 23:16:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-17 23:16:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-17 23:16:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-17 23:16:35,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:35,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780423208] [2022-03-17 23:16:35,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780423208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:35,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:35,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-17 23:16:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030364663] [2022-03-17 23:16:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:35,598 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-17 23:16:35,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-17 23:16:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-03-17 23:16:35,599 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) [2022-03-17 23:16:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:36,495 INFO L93 Difference]: Finished difference Result 584 states and 664 transitions. [2022-03-17 23:16:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-17 23:16:36,495 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 [2022-03-17 23:16:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:36,496 INFO L225 Difference]: With dead ends: 584 [2022-03-17 23:16:36,497 INFO L226 Difference]: Without dead ends: 531 [2022-03-17 23:16:36,497 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-03-17 23:16:36,497 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 284 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:36,497 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 1430 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 23:16:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-03-17 23:16:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 491. [2022-03-17 23:16:36,557 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) [2022-03-17 23:16:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 547 transitions. [2022-03-17 23:16:36,557 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 547 transitions. Word has length 150 [2022-03-17 23:16:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:36,557 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 547 transitions. [2022-03-17 23:16:36,558 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) [2022-03-17 23:16:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 547 transitions. [2022-03-17 23:16:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-17 23:16:36,558 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:36,559 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:36,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-17 23:16:36,559 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2130033855, now seen corresponding path program 1 times [2022-03-17 23:16:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:36,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874896651] [2022-03-17 23:16:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-17 23:16:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-17 23:16:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-17 23:16:36,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:36,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874896651] [2022-03-17 23:16:36,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874896651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:36,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:36,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-17 23:16:36,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406261573] [2022-03-17 23:16:36,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:36,800 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:16:36,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:16:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:16:36,800 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) [2022-03-17 23:16:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:37,341 INFO L93 Difference]: Finished difference Result 664 states and 748 transitions. [2022-03-17 23:16:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-17 23:16:37,341 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 [2022-03-17 23:16:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:37,342 INFO L225 Difference]: With dead ends: 664 [2022-03-17 23:16:37,342 INFO L226 Difference]: Without dead ends: 519 [2022-03-17 23:16:37,343 INFO L911 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 [2022-03-17 23:16:37,343 INFO L912 BasicCegarLoop]: 186 mSDtfsCounter, 284 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:37,343 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1191 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 23:16:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-03-17 23:16:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 491. [2022-03-17 23:16:37,401 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) [2022-03-17 23:16:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 545 transitions. [2022-03-17 23:16:37,401 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 545 transitions. Word has length 151 [2022-03-17 23:16:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:37,402 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 545 transitions. [2022-03-17 23:16:37,402 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) [2022-03-17 23:16:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 545 transitions. [2022-03-17 23:16:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-03-17 23:16:37,403 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:37,403 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:16:37,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-17 23:16:37,403 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:37,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1959969322, now seen corresponding path program 1 times [2022-03-17 23:16:37,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:37,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637797571] [2022-03-17 23:16:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:37,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-17 23:16:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-17 23:16:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-17 23:16:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-03-17 23:16:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:37,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637797571] [2022-03-17 23:16:37,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637797571] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:37,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:37,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-17 23:16:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789654786] [2022-03-17 23:16:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:37,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-17 23:16:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-17 23:16:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-17 23:16:37,706 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) [2022-03-17 23:16:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:38,348 INFO L93 Difference]: Finished difference Result 556 states and 624 transitions. [2022-03-17 23:16:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 23:16:38,349 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 [2022-03-17 23:16:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:38,350 INFO L225 Difference]: With dead ends: 556 [2022-03-17 23:16:38,350 INFO L226 Difference]: Without dead ends: 491 [2022-03-17 23:16:38,351 INFO L911 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 [2022-03-17 23:16:38,351 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 144 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:38,351 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1171 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:16:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-17 23:16:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-03-17 23:16:38,409 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) [2022-03-17 23:16:38,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 527 transitions. [2022-03-17 23:16:38,410 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 527 transitions. Word has length 153 [2022-03-17 23:16:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:38,410 INFO L478 AbstractCegarLoop]: Abstraction has 479 states and 527 transitions. [2022-03-17 23:16:38,410 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) [2022-03-17 23:16:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 527 transitions. [2022-03-17 23:16:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-03-17 23:16:38,411 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:38,411 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:16:38,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-17 23:16:38,411 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -249606396, now seen corresponding path program 1 times [2022-03-17 23:16:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079918305] [2022-03-17 23:16:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-17 23:16:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-17 23:16:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-17 23:16:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-03-17 23:16:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:38,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079918305] [2022-03-17 23:16:38,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079918305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:38,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:38,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 23:16:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267729820] [2022-03-17 23:16:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:38,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 23:16:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 23:16:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:16:38,654 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) [2022-03-17 23:16:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:39,129 INFO L93 Difference]: Finished difference Result 584 states and 642 transitions. [2022-03-17 23:16:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:39,129 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 [2022-03-17 23:16:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:39,130 INFO L225 Difference]: With dead ends: 584 [2022-03-17 23:16:39,130 INFO L226 Difference]: Without dead ends: 451 [2022-03-17 23:16:39,130 INFO L911 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 [2022-03-17 23:16:39,131 INFO L912 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 [2022-03-17 23:16:39,131 INFO L913 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] [2022-03-17 23:16:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-03-17 23:16:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 423. [2022-03-17 23:16:39,182 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) [2022-03-17 23:16:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 459 transitions. [2022-03-17 23:16:39,183 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 459 transitions. Word has length 158 [2022-03-17 23:16:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:39,183 INFO L478 AbstractCegarLoop]: Abstraction has 423 states and 459 transitions. [2022-03-17 23:16:39,183 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) [2022-03-17 23:16:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 459 transitions. [2022-03-17 23:16:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-03-17 23:16:39,184 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:39,184 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:16:39,184 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-17 23:16:39,184 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2090831252, now seen corresponding path program 1 times [2022-03-17 23:16:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:39,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932515281] [2022-03-17 23:16:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-17 23:16:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-17 23:16:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-17 23:16:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-17 23:16:39,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:39,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932515281] [2022-03-17 23:16:39,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932515281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:39,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:39,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-17 23:16:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690470735] [2022-03-17 23:16:39,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:39,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-17 23:16:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-17 23:16:39,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-17 23:16:39,438 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) [2022-03-17 23:16:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:39,771 INFO L93 Difference]: Finished difference Result 536 states and 584 transitions. [2022-03-17 23:16:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 23:16:39,771 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 [2022-03-17 23:16:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:39,772 INFO L225 Difference]: With dead ends: 536 [2022-03-17 23:16:39,772 INFO L226 Difference]: Without dead ends: 381 [2022-03-17 23:16:39,773 INFO L911 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 [2022-03-17 23:16:39,773 INFO L912 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:39,773 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 730 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:16:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-03-17 23:16:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-03-17 23:16:39,816 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) [2022-03-17 23:16:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 409 transitions. [2022-03-17 23:16:39,817 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 409 transitions. Word has length 160 [2022-03-17 23:16:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:39,817 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 409 transitions. [2022-03-17 23:16:39,817 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) [2022-03-17 23:16:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 409 transitions. [2022-03-17 23:16:39,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-17 23:16:39,818 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:39,818 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:39,818 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-17 23:16:39,818 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1980774501, now seen corresponding path program 1 times [2022-03-17 23:16:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:39,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004998811] [2022-03-17 23:16:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 23:16:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-17 23:16:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-17 23:16:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-17 23:16:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:40,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004998811] [2022-03-17 23:16:40,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004998811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:40,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:40,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-17 23:16:40,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744234689] [2022-03-17 23:16:40,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:40,105 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-17 23:16:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-17 23:16:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:16:40,108 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) [2022-03-17 23:16:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:41,225 INFO L93 Difference]: Finished difference Result 762 states and 821 transitions. [2022-03-17 23:16:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-17 23:16:41,225 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 [2022-03-17 23:16:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:41,227 INFO L225 Difference]: With dead ends: 762 [2022-03-17 23:16:41,227 INFO L226 Difference]: Without dead ends: 387 [2022-03-17 23:16:41,228 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2022-03-17 23:16:41,228 INFO L912 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 [2022-03-17 23:16:41,234 INFO L913 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] [2022-03-17 23:16:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-03-17 23:16:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2022-03-17 23:16:41,294 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) [2022-03-17 23:16:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 408 transitions. [2022-03-17 23:16:41,295 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 408 transitions. Word has length 161 [2022-03-17 23:16:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:41,296 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 408 transitions. [2022-03-17 23:16:41,296 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) [2022-03-17 23:16:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 408 transitions. [2022-03-17 23:16:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-17 23:16:41,309 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:16:41,309 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:16:41,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-17 23:16:41,309 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:16:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:16:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -628292860, now seen corresponding path program 1 times [2022-03-17 23:16:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:16:41,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267478545] [2022-03-17 23:16:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:16:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:16:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:16:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:16:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 23:16:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 23:16:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-17 23:16:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 23:16:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 23:16:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 23:16:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 23:16:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 23:16:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 23:16:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-17 23:16:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-17 23:16:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-17 23:16:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:16:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-17 23:16:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:16:41,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267478545] [2022-03-17 23:16:41,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267478545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:16:41,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:16:41,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-17 23:16:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892147162] [2022-03-17 23:16:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:16:41,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-17 23:16:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:16:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-17 23:16:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-03-17 23:16:41,720 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) [2022-03-17 23:16:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:16:42,600 INFO L93 Difference]: Finished difference Result 387 states and 416 transitions. [2022-03-17 23:16:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-17 23:16:42,600 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 [2022-03-17 23:16:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:16:42,601 INFO L225 Difference]: With dead ends: 387 [2022-03-17 23:16:42,601 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 23:16:42,602 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2022-03-17 23:16:42,602 INFO L912 BasicCegarLoop]: 126 mSDtfsCounter, 432 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:16:42,602 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 673 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:16:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 23:16:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 23:16:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 23:16:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 23:16:42,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2022-03-17 23:16:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:16:42,603 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 23:16:42,603 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) [2022-03-17 23:16:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 23:16:42,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 23:16:42,605 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 23:16:42,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-17 23:16:42,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.