/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 05:21:38,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:21:38,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:21:39,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 05:21:39,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 05:21:39,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 05:21:39,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 05:21:39,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 05:21:39,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 05:21:39,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 05:21:39,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 05:21:39,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 05:21:39,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:21:39,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:21:39,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:21:39,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:21:39,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:21:39,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:21:39,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:21:39,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:21:39,073 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:21:39,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:21:39,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:21:39,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:21:39,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:21:39,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 05:21:39,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 05:21:39,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 05:21:39,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 05:21:39,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 05:21:39,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 05:21:39,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 05:21:39,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 05:21:39,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 05:21:39,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 05:21:39,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 05:21:39,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 05:21:39,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 05:21:39,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 05:21:39,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:21:39,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:21:39,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:21:39,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:21:39,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:21:39,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:21:39,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:21:39,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:21:39,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:21:39,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:21:39,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:21:39,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:21:39,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:21:39,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:21:39,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:21:39,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:21:39,112 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:21:39,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:21:39,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:21:39,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:21:39,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:21:39,364 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:21:39,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-18 05:21:39,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40101ebcb/2ec50b1f9c0e43a2905640304b12843e/FLAG10cb537ec [2022-03-18 05:21:39,880 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:21:39,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-03-18 05:21:39,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40101ebcb/2ec50b1f9c0e43a2905640304b12843e/FLAG10cb537ec [2022-03-18 05:21:39,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40101ebcb/2ec50b1f9c0e43a2905640304b12843e [2022-03-18 05:21:39,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:21:39,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:21:39,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:21:39,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:21:39,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:21:39,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:21:39" (1/1) ... [2022-03-18 05:21:39,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332bab42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:39, skipping insertion in model container [2022-03-18 05:21:39,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:21:39" (1/1) ... [2022-03-18 05:21:39,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:21:40,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:21:40,172 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-18 05:21:40,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:21:40,330 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:21:40,342 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-03-18 05:21:40,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:21:40,435 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:21:40,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40 WrapperNode [2022-03-18 05:21:40,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:21:40,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:21:40,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:21:40,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:21:40,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:21:40,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:21:40,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:21:40,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:21:40,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (1/1) ... [2022-03-18 05:21:40,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:21:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:21:40,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 05:21:40,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 05:21:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:21:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:21:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:21:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:21:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-18 05:21:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-18 05:21:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-18 05:21:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-18 05:21:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-18 05:21:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-18 05:21:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-18 05:21:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 05:21:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 05:21:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:21:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:21:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-18 05:21:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-18 05:21:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:21:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:21:40,772 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:21:40,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:21:40,983 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,063 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-18 05:21:41,063 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-18 05:21:41,066 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:21:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:21:41,119 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:21:41,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:21:41,192 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 05:21:41,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-18 05:21:41,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 05:21:41,247 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,332 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-18 05:21:41,332 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-18 05:21:41,333 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,352 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 05:21:41,352 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 05:21:41,374 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,383 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 05:21:41,384 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 05:21:41,387 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,520 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 05:21:41,520 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 05:21:41,528 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:21:41,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:21:41,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:21:41,552 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:21:41,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:21:41,562 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 05:21:41,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:21:41 BoogieIcfgContainer [2022-03-18 05:21:41,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:21:41,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:21:41,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:21:41,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:21:41,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:21:39" (1/3) ... [2022-03-18 05:21:41,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c799b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:21:41, skipping insertion in model container [2022-03-18 05:21:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:21:40" (2/3) ... [2022-03-18 05:21:41,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c799b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:21:41, skipping insertion in model container [2022-03-18 05:21:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:21:41" (3/3) ... [2022-03-18 05:21:41,573 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2022-03-18 05:21:41,577 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:21:41,577 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:21:41,609 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:21:41,614 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 05:21:41,614 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:21:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-03-18 05:21:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 05:21:41,647 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:41,648 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:41,648 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1971492104, now seen corresponding path program 1 times [2022-03-18 05:21:41,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:41,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1568735542] [2022-03-18 05:21:41,664 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1971492104, now seen corresponding path program 2 times [2022-03-18 05:21:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485458511] [2022-03-18 05:21:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485458511] [2022-03-18 05:21:42,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485458511] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:42,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:42,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:21:42,021 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:42,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1568735542] [2022-03-18 05:21:42,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1568735542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:42,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:42,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:21:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565020019] [2022-03-18 05:21:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:42,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:21:42,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:21:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:21:42,052 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 05:21:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:44,015 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-03-18 05:21:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:21:44,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-18 05:21:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:44,028 INFO L225 Difference]: With dead ends: 1047 [2022-03-18 05:21:44,028 INFO L226 Difference]: Without dead ends: 665 [2022-03-18 05:21:44,044 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:44,046 INFO L912 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:44,046 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 05:21:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-18 05:21:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-03-18 05:21:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-18 05:21:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-03-18 05:21:44,135 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-03-18 05:21:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:44,136 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-03-18 05:21:44,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 05:21:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-03-18 05:21:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-18 05:21:44,137 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:44,137 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:44,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:21:44,137 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1335659000, now seen corresponding path program 1 times [2022-03-18 05:21:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:44,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1583844209] [2022-03-18 05:21:44,139 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:44,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1335659000, now seen corresponding path program 2 times [2022-03-18 05:21:44,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:44,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115054261] [2022-03-18 05:21:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:44,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115054261] [2022-03-18 05:21:44,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115054261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:44,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:44,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:44,296 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:44,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1583844209] [2022-03-18 05:21:44,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1583844209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:44,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:44,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665860801] [2022-03-18 05:21:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:44,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:21:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:21:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:44,298 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:45,691 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-03-18 05:21:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:21:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-18 05:21:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:45,698 INFO L225 Difference]: With dead ends: 967 [2022-03-18 05:21:45,698 INFO L226 Difference]: Without dead ends: 846 [2022-03-18 05:21:45,699 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:21:45,700 INFO L912 BasicCegarLoop]: 841 mSDtfsCounter, 1498 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:45,701 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1013 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:21:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-03-18 05:21:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-03-18 05:21:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-03-18 05:21:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-03-18 05:21:45,773 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-03-18 05:21:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:45,773 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-03-18 05:21:45,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-03-18 05:21:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 05:21:45,779 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:45,780 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] [2022-03-18 05:21:45,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 05:21:45,780 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2015725837, now seen corresponding path program 1 times [2022-03-18 05:21:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:45,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1049825510] [2022-03-18 05:21:45,784 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2015725837, now seen corresponding path program 2 times [2022-03-18 05:21:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:45,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132022373] [2022-03-18 05:21:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:45,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:45,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132022373] [2022-03-18 05:21:45,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132022373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:45,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:45,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:45,957 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:45,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1049825510] [2022-03-18 05:21:45,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1049825510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:45,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:45,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132949830] [2022-03-18 05:21:45,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:45,958 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:21:45,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:21:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:45,958 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:47,085 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-03-18 05:21:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:21:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-18 05:21:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:47,090 INFO L225 Difference]: With dead ends: 1148 [2022-03-18 05:21:47,090 INFO L226 Difference]: Without dead ends: 970 [2022-03-18 05:21:47,091 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:21:47,091 INFO L912 BasicCegarLoop]: 725 mSDtfsCounter, 1529 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:47,092 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 867 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:21:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-03-18 05:21:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-03-18 05:21:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-03-18 05:21:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-03-18 05:21:47,164 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-03-18 05:21:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:47,164 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-03-18 05:21:47,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-03-18 05:21:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 05:21:47,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:47,165 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:47,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 05:21:47,166 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -994008456, now seen corresponding path program 1 times [2022-03-18 05:21:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:47,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [975497346] [2022-03-18 05:21:47,166 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -994008456, now seen corresponding path program 2 times [2022-03-18 05:21:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:47,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691896822] [2022-03-18 05:21:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691896822] [2022-03-18 05:21:47,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691896822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:47,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:47,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:47,264 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [975497346] [2022-03-18 05:21:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [975497346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:47,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:47,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:47,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792894387] [2022-03-18 05:21:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:47,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:21:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:21:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:47,265 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:48,948 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-03-18 05:21:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:21:48,951 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), 2 states have call successors, (7), 5 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 31 [2022-03-18 05:21:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:48,957 INFO L225 Difference]: With dead ends: 1630 [2022-03-18 05:21:48,957 INFO L226 Difference]: Without dead ends: 1344 [2022-03-18 05:21:48,958 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:21:48,958 INFO L912 BasicCegarLoop]: 1009 mSDtfsCounter, 1111 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:48,958 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1265 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:21:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-03-18 05:21:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-03-18 05:21:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-03-18 05:21:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-03-18 05:21:49,084 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-03-18 05:21:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:49,084 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-03-18 05:21:49,084 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), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-03-18 05:21:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-18 05:21:49,085 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:49,085 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] [2022-03-18 05:21:49,085 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 05:21:49,085 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -987884657, now seen corresponding path program 1 times [2022-03-18 05:21:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:49,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [624099558] [2022-03-18 05:21:49,086 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -987884657, now seen corresponding path program 2 times [2022-03-18 05:21:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:49,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307930103] [2022-03-18 05:21:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:49,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:49,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307930103] [2022-03-18 05:21:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307930103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:49,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:49,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:21:49,242 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [624099558] [2022-03-18 05:21:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [624099558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:49,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:49,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:21:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654772199] [2022-03-18 05:21:49,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:49,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:21:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:21:49,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:21:49,244 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 05:21:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:51,057 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-03-18 05:21:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:21:51,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-03-18 05:21:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:51,064 INFO L225 Difference]: With dead ends: 1632 [2022-03-18 05:21:51,065 INFO L226 Difference]: Without dead ends: 1046 [2022-03-18 05:21:51,066 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:21:51,067 INFO L912 BasicCegarLoop]: 743 mSDtfsCounter, 3353 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:51,069 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3359 Valid, 890 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 05:21:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-18 05:21:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-03-18 05:21:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-18 05:21:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-03-18 05:21:51,156 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-03-18 05:21:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:51,157 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-03-18 05:21:51,157 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 05:21:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-03-18 05:21:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 05:21:51,159 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:51,159 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:51,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 05:21:51,159 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 450252455, now seen corresponding path program 1 times [2022-03-18 05:21:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:51,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1511665169] [2022-03-18 05:21:51,160 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 450252455, now seen corresponding path program 2 times [2022-03-18 05:21:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:51,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525202033] [2022-03-18 05:21:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:51,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525202033] [2022-03-18 05:21:51,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525202033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:51,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:51,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:51,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:51,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1511665169] [2022-03-18 05:21:51,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1511665169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:51,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:51,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162993010] [2022-03-18 05:21:51,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:51,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:21:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:51,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:21:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:51,291 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:53,006 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-03-18 05:21:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:21:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-18 05:21:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:53,011 INFO L225 Difference]: With dead ends: 965 [2022-03-18 05:21:53,011 INFO L226 Difference]: Without dead ends: 961 [2022-03-18 05:21:53,012 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:21:53,012 INFO L912 BasicCegarLoop]: 713 mSDtfsCounter, 771 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:53,013 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 982 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:21:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-03-18 05:21:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-03-18 05:21:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-18 05:21:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-03-18 05:21:53,133 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-03-18 05:21:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:53,134 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-03-18 05:21:53,134 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-03-18 05:21:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 05:21:53,135 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:53,135 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:53,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 05:21:53,136 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash -783054808, now seen corresponding path program 1 times [2022-03-18 05:21:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:53,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [719421900] [2022-03-18 05:21:53,137 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -783054808, now seen corresponding path program 2 times [2022-03-18 05:21:53,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:53,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771495298] [2022-03-18 05:21:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:53,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771495298] [2022-03-18 05:21:53,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771495298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:53,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:53,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:53,247 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [719421900] [2022-03-18 05:21:53,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [719421900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:53,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:53,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47659304] [2022-03-18 05:21:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:53,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:21:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:21:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:21:53,249 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:55,225 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-03-18 05:21:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:21:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-03-18 05:21:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:55,229 INFO L225 Difference]: With dead ends: 1417 [2022-03-18 05:21:55,229 INFO L226 Difference]: Without dead ends: 999 [2022-03-18 05:21:55,231 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:21:55,231 INFO L912 BasicCegarLoop]: 821 mSDtfsCounter, 1494 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:55,231 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1252 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 05:21:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-18 05:21:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-03-18 05:21:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-18 05:21:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-03-18 05:21:55,331 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-03-18 05:21:55,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:55,332 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-03-18 05:21:55,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-03-18 05:21:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 05:21:55,334 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:55,334 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:55,334 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 05:21:55,334 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1815790808, now seen corresponding path program 1 times [2022-03-18 05:21:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1221989516] [2022-03-18 05:21:55,335 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1815790808, now seen corresponding path program 2 times [2022-03-18 05:21:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853986881] [2022-03-18 05:21:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:55,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:55,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853986881] [2022-03-18 05:21:55,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853986881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:55,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:55,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:55,480 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:55,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1221989516] [2022-03-18 05:21:55,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1221989516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:55,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:55,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:21:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340873505] [2022-03-18 05:21:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:55,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:21:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:21:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:21:55,481 INFO L87 Difference]: Start difference. First operand 736 states and 1029 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, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:57,000 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-03-18 05:21:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:21:57,001 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, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-18 05:21:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:57,018 INFO L225 Difference]: With dead ends: 979 [2022-03-18 05:21:57,018 INFO L226 Difference]: Without dead ends: 959 [2022-03-18 05:21:57,018 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:21:57,019 INFO L912 BasicCegarLoop]: 672 mSDtfsCounter, 1124 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:57,020 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 773 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 05:21:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-18 05:21:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-03-18 05:21:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-18 05:21:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-03-18 05:21:57,117 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-03-18 05:21:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:57,119 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-03-18 05:21:57,119 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, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:21:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-03-18 05:21:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 05:21:57,121 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:57,121 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:57,121 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 05:21:57,121 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 737122156, now seen corresponding path program 1 times [2022-03-18 05:21:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:57,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1989974637] [2022-03-18 05:21:57,122 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 737122156, now seen corresponding path program 2 times [2022-03-18 05:21:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:57,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490298802] [2022-03-18 05:21:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:21:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:57,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490298802] [2022-03-18 05:21:57,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490298802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:57,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:57,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:57,263 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:57,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1989974637] [2022-03-18 05:21:57,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1989974637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:57,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:57,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:57,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911803527] [2022-03-18 05:21:57,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:57,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:21:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:21:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:21:57,264 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:21:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:21:58,549 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-03-18 05:21:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:21:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-18 05:21:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:21:58,557 INFO L225 Difference]: With dead ends: 1167 [2022-03-18 05:21:58,558 INFO L226 Difference]: Without dead ends: 942 [2022-03-18 05:21:58,558 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:21:58,559 INFO L912 BasicCegarLoop]: 791 mSDtfsCounter, 1663 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:21:58,559 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 1318 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:21:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-03-18 05:21:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-03-18 05:21:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-18 05:21:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-03-18 05:21:58,658 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-03-18 05:21:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:21:58,659 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-03-18 05:21:58,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:21:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-03-18 05:21:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 05:21:58,663 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:21:58,663 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:21:58,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 05:21:58,663 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:21:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:21:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash 8107196, now seen corresponding path program 1 times [2022-03-18 05:21:58,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:58,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [380063675] [2022-03-18 05:21:58,664 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:21:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash 8107196, now seen corresponding path program 2 times [2022-03-18 05:21:58,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:21:58,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051059702] [2022-03-18 05:21:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:21:58,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:21:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:21:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:58,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:21:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:21:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 05:21:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:21:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:21:58,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:21:58,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051059702] [2022-03-18 05:21:58,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051059702] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:58,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:58,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:58,794 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:21:58,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [380063675] [2022-03-18 05:21:58,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [380063675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:21:58,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:21:58,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:21:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000217182] [2022-03-18 05:21:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:21:58,794 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:21:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:21:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:21:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:21:58,795 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:22:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:00,103 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-03-18 05:22:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:22:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-03-18 05:22:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:00,106 INFO L225 Difference]: With dead ends: 964 [2022-03-18 05:22:00,106 INFO L226 Difference]: Without dead ends: 897 [2022-03-18 05:22:00,107 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:00,108 INFO L912 BasicCegarLoop]: 667 mSDtfsCounter, 1507 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:00,108 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1140 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:22:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-18 05:22:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-03-18 05:22:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-03-18 05:22:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-03-18 05:22:00,218 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-03-18 05:22:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:00,218 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-03-18 05:22:00,218 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:22:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-03-18 05:22:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-18 05:22:00,220 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:00,220 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:00,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 05:22:00,220 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -776493065, now seen corresponding path program 1 times [2022-03-18 05:22:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:00,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [64604107] [2022-03-18 05:22:00,223 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -776493065, now seen corresponding path program 2 times [2022-03-18 05:22:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:00,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869191315] [2022-03-18 05:22:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:00,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869191315] [2022-03-18 05:22:00,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869191315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:00,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:00,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:00,412 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:00,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [64604107] [2022-03-18 05:22:00,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [64604107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:00,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:00,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992319297] [2022-03-18 05:22:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:00,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:00,413 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:02,584 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-03-18 05:22:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:22:02,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-03-18 05:22:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:02,588 INFO L225 Difference]: With dead ends: 1067 [2022-03-18 05:22:02,588 INFO L226 Difference]: Without dead ends: 1006 [2022-03-18 05:22:02,588 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:22:02,588 INFO L912 BasicCegarLoop]: 766 mSDtfsCounter, 1821 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:02,589 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 1768 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 05:22:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-03-18 05:22:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-03-18 05:22:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 05:22:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-03-18 05:22:02,694 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-03-18 05:22:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:02,694 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-03-18 05:22:02,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-03-18 05:22:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:02,696 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:02,696 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:02,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 05:22:02,696 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1944299410, now seen corresponding path program 1 times [2022-03-18 05:22:02,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:02,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2124036572] [2022-03-18 05:22:02,696 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1944299410, now seen corresponding path program 2 times [2022-03-18 05:22:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:02,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784678001] [2022-03-18 05:22:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:02,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784678001] [2022-03-18 05:22:02,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784678001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:02,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:02,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:02,825 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2124036572] [2022-03-18 05:22:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2124036572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:02,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:02,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196147172] [2022-03-18 05:22:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:02,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:22:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:22:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:02,826 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:04,654 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-03-18 05:22:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-18 05:22:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:04,658 INFO L225 Difference]: With dead ends: 952 [2022-03-18 05:22:04,658 INFO L226 Difference]: Without dead ends: 924 [2022-03-18 05:22:04,659 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:22:04,659 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 1180 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:04,660 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 1456 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-18 05:22:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-03-18 05:22:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 05:22:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-03-18 05:22:04,841 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-03-18 05:22:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:04,841 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-03-18 05:22:04,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-03-18 05:22:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:04,844 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:04,844 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:04,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 05:22:04,844 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash -49845296, now seen corresponding path program 1 times [2022-03-18 05:22:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:04,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1863158759] [2022-03-18 05:22:04,845 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash -49845296, now seen corresponding path program 2 times [2022-03-18 05:22:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:04,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334842403] [2022-03-18 05:22:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:04,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:05,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334842403] [2022-03-18 05:22:05,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334842403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:05,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:05,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:05,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:05,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1863158759] [2022-03-18 05:22:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1863158759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:05,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:05,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:05,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193406857] [2022-03-18 05:22:05,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:05,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:05,063 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:07,054 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-03-18 05:22:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-18 05:22:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:07,057 INFO L225 Difference]: With dead ends: 978 [2022-03-18 05:22:07,057 INFO L226 Difference]: Without dead ends: 914 [2022-03-18 05:22:07,058 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:07,058 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 1576 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:07,058 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1818 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2993 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-18 05:22:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-03-18 05:22:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-18 05:22:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-03-18 05:22:07,222 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-03-18 05:22:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:07,222 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-03-18 05:22:07,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-03-18 05:22:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:07,224 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:07,224 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:07,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 05:22:07,224 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:07,224 INFO L85 PathProgramCache]: Analyzing trace with hash 96847506, now seen corresponding path program 1 times [2022-03-18 05:22:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1679541233] [2022-03-18 05:22:07,225 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 96847506, now seen corresponding path program 2 times [2022-03-18 05:22:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067650943] [2022-03-18 05:22:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:07,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067650943] [2022-03-18 05:22:07,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067650943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:07,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:07,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:22:07,367 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:07,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1679541233] [2022-03-18 05:22:07,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1679541233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:07,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:07,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:22:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030496201] [2022-03-18 05:22:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:07,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:22:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:22:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:22:07,369 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:08,770 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-03-18 05:22:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:22:08,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-03-18 05:22:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:08,782 INFO L225 Difference]: With dead ends: 1090 [2022-03-18 05:22:08,782 INFO L226 Difference]: Without dead ends: 1074 [2022-03-18 05:22:08,786 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:08,793 INFO L912 BasicCegarLoop]: 799 mSDtfsCounter, 890 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:08,793 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1338 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:22:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-03-18 05:22:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-03-18 05:22:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-03-18 05:22:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-03-18 05:22:08,989 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-03-18 05:22:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:08,989 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-03-18 05:22:08,989 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-03-18 05:22:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:22:08,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:08,991 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:08,991 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 05:22:08,991 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash 637282241, now seen corresponding path program 1 times [2022-03-18 05:22:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [512070384] [2022-03-18 05:22:08,992 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash 637282241, now seen corresponding path program 2 times [2022-03-18 05:22:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582069948] [2022-03-18 05:22:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:08,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:09,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:09,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582069948] [2022-03-18 05:22:09,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582069948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:09,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:09,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:09,175 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:09,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [512070384] [2022-03-18 05:22:09,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [512070384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:09,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:09,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:09,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435406894] [2022-03-18 05:22:09,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:09,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:22:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:09,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:22:09,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:22:09,177 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:10,553 INFO L93 Difference]: Finished difference Result 996 states and 1410 transitions. [2022-03-18 05:22:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:22:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-03-18 05:22:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:10,557 INFO L225 Difference]: With dead ends: 996 [2022-03-18 05:22:10,557 INFO L226 Difference]: Without dead ends: 991 [2022-03-18 05:22:10,559 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:10,560 INFO L912 BasicCegarLoop]: 697 mSDtfsCounter, 1190 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:10,560 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 1168 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:22:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-18 05:22:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 867. [2022-03-18 05:22:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 679 states have (on average 1.369661266568483) internal successors, (930), 694 states have internal predecessors, (930), 113 states have call successors, (113), 52 states have call predecessors, (113), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-03-18 05:22:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1188 transitions. [2022-03-18 05:22:10,704 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1188 transitions. Word has length 52 [2022-03-18 05:22:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:10,704 INFO L478 AbstractCegarLoop]: Abstraction has 867 states and 1188 transitions. [2022-03-18 05:22:10,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1188 transitions. [2022-03-18 05:22:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:22:10,706 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:10,706 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] [2022-03-18 05:22:10,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 05:22:10,706 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 708397377, now seen corresponding path program 1 times [2022-03-18 05:22:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1313971243] [2022-03-18 05:22:10,706 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 708397377, now seen corresponding path program 2 times [2022-03-18 05:22:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231220496] [2022-03-18 05:22:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 05:22:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 05:22:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:10,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231220496] [2022-03-18 05:22:10,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231220496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:10,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:10,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:10,816 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:10,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1313971243] [2022-03-18 05:22:10,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1313971243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:10,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:10,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865034867] [2022-03-18 05:22:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:10,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:22:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:22:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:10,817 INFO L87 Difference]: Start difference. First operand 867 states and 1188 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:12,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:12,513 INFO L93 Difference]: Finished difference Result 1203 states and 1692 transitions. [2022-03-18 05:22:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:22:12,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-18 05:22:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:12,518 INFO L225 Difference]: With dead ends: 1203 [2022-03-18 05:22:12,518 INFO L226 Difference]: Without dead ends: 956 [2022-03-18 05:22:12,519 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:12,519 INFO L912 BasicCegarLoop]: 641 mSDtfsCounter, 700 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:12,520 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1175 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 05:22:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-03-18 05:22:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 836. [2022-03-18 05:22:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-03-18 05:22:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-03-18 05:22:12,710 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 54 [2022-03-18 05:22:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:12,710 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-03-18 05:22:12,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-03-18 05:22:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:22:12,712 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:12,712 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:12,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 05:22:12,712 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -848829632, now seen corresponding path program 1 times [2022-03-18 05:22:12,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:12,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [710946978] [2022-03-18 05:22:12,713 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -848829632, now seen corresponding path program 2 times [2022-03-18 05:22:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:12,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213144526] [2022-03-18 05:22:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:12,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:12,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213144526] [2022-03-18 05:22:12,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213144526] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:12,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:12,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:12,855 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:12,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [710946978] [2022-03-18 05:22:12,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [710946978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:12,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:12,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:12,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276302269] [2022-03-18 05:22:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:12,856 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:12,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:12,857 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:14,576 INFO L93 Difference]: Finished difference Result 971 states and 1378 transitions. [2022-03-18 05:22:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:14,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 05:22:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:14,579 INFO L225 Difference]: With dead ends: 971 [2022-03-18 05:22:14,579 INFO L226 Difference]: Without dead ends: 967 [2022-03-18 05:22:14,580 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:14,580 INFO L912 BasicCegarLoop]: 706 mSDtfsCounter, 735 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 3512 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:14,580 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 2358 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3512 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-03-18 05:22:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 843. [2022-03-18 05:22:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 661 states have (on average 1.367624810892587) internal successors, (904), 675 states have internal predecessors, (904), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 05:22:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1157 transitions. [2022-03-18 05:22:14,736 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1157 transitions. Word has length 51 [2022-03-18 05:22:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:14,737 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1157 transitions. [2022-03-18 05:22:14,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1157 transitions. [2022-03-18 05:22:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:22:14,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:14,738 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:14,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 05:22:14,738 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -849106462, now seen corresponding path program 1 times [2022-03-18 05:22:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:14,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2007839443] [2022-03-18 05:22:14,739 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -849106462, now seen corresponding path program 2 times [2022-03-18 05:22:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:14,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796241291] [2022-03-18 05:22:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:14,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:14,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796241291] [2022-03-18 05:22:14,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796241291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:14,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:14,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:14,880 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:14,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2007839443] [2022-03-18 05:22:14,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2007839443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:14,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:14,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595880191] [2022-03-18 05:22:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:14,881 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:14,881 INFO L87 Difference]: Start difference. First operand 843 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:16,997 INFO L93 Difference]: Finished difference Result 986 states and 1394 transitions. [2022-03-18 05:22:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:16,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 05:22:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:17,001 INFO L225 Difference]: With dead ends: 986 [2022-03-18 05:22:17,001 INFO L226 Difference]: Without dead ends: 962 [2022-03-18 05:22:17,002 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:17,002 INFO L912 BasicCegarLoop]: 708 mSDtfsCounter, 737 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 3842 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:17,003 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2458 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3842 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 05:22:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-03-18 05:22:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 842. [2022-03-18 05:22:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 05:22:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-03-18 05:22:17,178 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-03-18 05:22:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:17,178 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-03-18 05:22:17,178 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-03-18 05:22:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 05:22:17,181 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:17,181 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:17,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 05:22:17,181 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1275498861, now seen corresponding path program 1 times [2022-03-18 05:22:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:17,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1960673882] [2022-03-18 05:22:17,182 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1275498861, now seen corresponding path program 2 times [2022-03-18 05:22:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:17,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917816886] [2022-03-18 05:22:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917816886] [2022-03-18 05:22:17,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917816886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:17,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:17,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:17,415 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1960673882] [2022-03-18 05:22:17,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1960673882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:17,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:17,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905730086] [2022-03-18 05:22:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:17,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:22:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:22:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:17,416 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:19,217 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-03-18 05:22:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-03-18 05:22:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:19,226 INFO L225 Difference]: With dead ends: 974 [2022-03-18 05:22:19,226 INFO L226 Difference]: Without dead ends: 968 [2022-03-18 05:22:19,227 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:19,227 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 2613 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2639 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:19,227 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2639 Valid, 1383 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 05:22:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-18 05:22:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-03-18 05:22:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-18 05:22:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-03-18 05:22:19,396 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-03-18 05:22:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:19,396 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-03-18 05:22:19,396 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-03-18 05:22:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:22:19,398 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:19,398 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:19,398 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 05:22:19,398 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -204304198, now seen corresponding path program 1 times [2022-03-18 05:22:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:19,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2057457123] [2022-03-18 05:22:19,399 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash -204304198, now seen corresponding path program 2 times [2022-03-18 05:22:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:19,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972067650] [2022-03-18 05:22:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972067650] [2022-03-18 05:22:19,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972067650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:19,534 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:19,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2057457123] [2022-03-18 05:22:19,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2057457123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:19,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:19,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452783418] [2022-03-18 05:22:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:19,534 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:22:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:22:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:22:19,535 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:21,563 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-03-18 05:22:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:22:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-03-18 05:22:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:21,566 INFO L225 Difference]: With dead ends: 979 [2022-03-18 05:22:21,566 INFO L226 Difference]: Without dead ends: 943 [2022-03-18 05:22:21,567 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:22:21,567 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 1565 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:21,567 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 1284 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-03-18 05:22:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-03-18 05:22:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-18 05:22:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-03-18 05:22:21,769 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-03-18 05:22:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:21,769 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-03-18 05:22:21,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-03-18 05:22:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:22:21,771 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:21,771 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] [2022-03-18 05:22:21,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 05:22:21,771 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1517780378, now seen corresponding path program 1 times [2022-03-18 05:22:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [831924752] [2022-03-18 05:22:21,772 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1517780378, now seen corresponding path program 2 times [2022-03-18 05:22:21,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857813779] [2022-03-18 05:22:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857813779] [2022-03-18 05:22:21,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857813779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:21,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:21,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:21,989 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [831924752] [2022-03-18 05:22:21,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [831924752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:21,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:21,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174136232] [2022-03-18 05:22:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:21,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:22:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:22:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:21,990 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:24,179 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-03-18 05:22:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:24,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-03-18 05:22:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:24,192 INFO L225 Difference]: With dead ends: 945 [2022-03-18 05:22:24,193 INFO L226 Difference]: Without dead ends: 939 [2022-03-18 05:22:24,195 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:24,196 INFO L912 BasicCegarLoop]: 630 mSDtfsCounter, 2544 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:24,196 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 1558 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 05:22:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-03-18 05:22:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-03-18 05:22:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-18 05:22:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-03-18 05:22:24,412 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-03-18 05:22:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:24,412 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-03-18 05:22:24,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-03-18 05:22:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:22:24,414 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:24,414 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] [2022-03-18 05:22:24,414 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 05:22:24,414 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash 505594524, now seen corresponding path program 1 times [2022-03-18 05:22:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:24,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [509031110] [2022-03-18 05:22:24,414 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash 505594524, now seen corresponding path program 2 times [2022-03-18 05:22:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901600119] [2022-03-18 05:22:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:24,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:24,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901600119] [2022-03-18 05:22:24,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901600119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:24,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:24,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:24,623 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [509031110] [2022-03-18 05:22:24,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [509031110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:24,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:24,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:24,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908993008] [2022-03-18 05:22:24,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:24,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:22:24,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:22:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:24,624 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-03-18 05:22:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:26,967 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-03-18 05:22:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:22:26,969 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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 55 [2022-03-18 05:22:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:26,998 INFO L225 Difference]: With dead ends: 966 [2022-03-18 05:22:26,998 INFO L226 Difference]: Without dead ends: 926 [2022-03-18 05:22:26,999 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:22:26,999 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 1069 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 4889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:26,999 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2476 Invalid, 4889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 05:22:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-03-18 05:22:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-03-18 05:22:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-03-18 05:22:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-03-18 05:22:27,219 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-03-18 05:22:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:27,220 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-03-18 05:22:27,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-03-18 05:22:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-03-18 05:22:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:22:27,223 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:27,224 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] [2022-03-18 05:22:27,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 05:22:27,224 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1791275328, now seen corresponding path program 1 times [2022-03-18 05:22:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:27,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1351058767] [2022-03-18 05:22:27,225 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1791275328, now seen corresponding path program 2 times [2022-03-18 05:22:27,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:27,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593617619] [2022-03-18 05:22:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:27,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:27,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593617619] [2022-03-18 05:22:27,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593617619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:27,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:27,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:27,480 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:27,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1351058767] [2022-03-18 05:22:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1351058767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402078542] [2022-03-18 05:22:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:27,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:22:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:22:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:27,481 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:30,018 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-03-18 05:22:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:22:30,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-18 05:22:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:30,022 INFO L225 Difference]: With dead ends: 942 [2022-03-18 05:22:30,022 INFO L226 Difference]: Without dead ends: 924 [2022-03-18 05:22:30,022 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:30,023 INFO L912 BasicCegarLoop]: 660 mSDtfsCounter, 978 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 5471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:30,023 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2682 Invalid, 5471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 05:22:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-03-18 05:22:30,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-03-18 05:22:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-18 05:22:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-03-18 05:22:30,257 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-03-18 05:22:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:30,257 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-03-18 05:22:30,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-03-18 05:22:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-18 05:22:30,260 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:30,260 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, 1, 1, 1] [2022-03-18 05:22:30,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 05:22:30,260 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash 388427064, now seen corresponding path program 1 times [2022-03-18 05:22:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:30,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [904379134] [2022-03-18 05:22:30,261 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash 388427064, now seen corresponding path program 2 times [2022-03-18 05:22:30,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:30,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915672639] [2022-03-18 05:22:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915672639] [2022-03-18 05:22:30,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915672639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:30,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:30,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:30,442 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [904379134] [2022-03-18 05:22:30,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [904379134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:30,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:30,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518873138] [2022-03-18 05:22:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:30,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:22:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:22:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:30,443 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:32,301 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-03-18 05:22:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:22:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-18 05:22:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:32,305 INFO L225 Difference]: With dead ends: 937 [2022-03-18 05:22:32,305 INFO L226 Difference]: Without dead ends: 919 [2022-03-18 05:22:32,306 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:32,306 INFO L912 BasicCegarLoop]: 657 mSDtfsCounter, 682 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:32,307 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 2653 Invalid, 4914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-18 05:22:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-03-18 05:22:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-18 05:22:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-03-18 05:22:32,584 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-03-18 05:22:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:32,584 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-03-18 05:22:32,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-03-18 05:22:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-18 05:22:32,585 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:32,585 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] [2022-03-18 05:22:32,586 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 05:22:32,586 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:32,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash 562366210, now seen corresponding path program 1 times [2022-03-18 05:22:32,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:32,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1301724584] [2022-03-18 05:22:32,586 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash 562366210, now seen corresponding path program 2 times [2022-03-18 05:22:32,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:32,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092209667] [2022-03-18 05:22:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:32,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:22:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:22:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:32,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:32,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092209667] [2022-03-18 05:22:32,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092209667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:32,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:32,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:32,738 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:32,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1301724584] [2022-03-18 05:22:32,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1301724584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:32,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:32,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:32,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67188708] [2022-03-18 05:22:32,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:32,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:22:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:22:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:32,739 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:34,323 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-03-18 05:22:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:22:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-18 05:22:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:34,328 INFO L225 Difference]: With dead ends: 984 [2022-03-18 05:22:34,328 INFO L226 Difference]: Without dead ends: 941 [2022-03-18 05:22:34,328 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:34,328 INFO L912 BasicCegarLoop]: 678 mSDtfsCounter, 1525 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:34,328 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 1190 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:22:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-03-18 05:22:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-03-18 05:22:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-18 05:22:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-03-18 05:22:34,517 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-03-18 05:22:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:34,517 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-03-18 05:22:34,517 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:22:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-03-18 05:22:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 05:22:34,519 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:34,519 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 05:22:34,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 05:22:34,519 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash -514626408, now seen corresponding path program 1 times [2022-03-18 05:22:34,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:34,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [57202811] [2022-03-18 05:22:34,520 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash -514626408, now seen corresponding path program 2 times [2022-03-18 05:22:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:34,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652220450] [2022-03-18 05:22:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:22:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:22:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:34,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652220450] [2022-03-18 05:22:34,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652220450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:22:34,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043869506] [2022-03-18 05:22:34,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:22:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:22:34,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:22:34,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:22:34,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 05:22:34,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 05:22:34,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:22:34,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 05:22:34,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:22:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:35,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 05:22:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:35,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043869506] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 05:22:35,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-18 05:22:35,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-03-18 05:22:35,396 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:35,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [57202811] [2022-03-18 05:22:35,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [57202811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:35,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:35,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:22:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352071930] [2022-03-18 05:22:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:35,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:22:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:22:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:35,398 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:36,124 INFO L93 Difference]: Finished difference Result 1117 states and 1518 transitions. [2022-03-18 05:22:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:22:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-03-18 05:22:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:36,129 INFO L225 Difference]: With dead ends: 1117 [2022-03-18 05:22:36,129 INFO L226 Difference]: Without dead ends: 953 [2022-03-18 05:22:36,130 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:36,130 INFO L912 BasicCegarLoop]: 693 mSDtfsCounter, 870 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:36,130 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1140 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:22:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-03-18 05:22:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 837. [2022-03-18 05:22:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3541033434650456) internal successors, (891), 671 states have internal predecessors, (891), 108 states have call successors, (108), 51 states have call predecessors, (108), 70 states have return successors, (143), 121 states have call predecessors, (143), 101 states have call successors, (143) [2022-03-18 05:22:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1142 transitions. [2022-03-18 05:22:36,418 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1142 transitions. Word has length 74 [2022-03-18 05:22:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:36,418 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1142 transitions. [2022-03-18 05:22:36,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1142 transitions. [2022-03-18 05:22:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 05:22:36,420 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:36,420 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] [2022-03-18 05:22:36,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 05:22:36,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-18 05:22:36,644 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2049298278, now seen corresponding path program 1 times [2022-03-18 05:22:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:36,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [599492622] [2022-03-18 05:22:36,645 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2049298278, now seen corresponding path program 2 times [2022-03-18 05:22:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:36,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579402966] [2022-03-18 05:22:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:37,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:37,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579402966] [2022-03-18 05:22:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579402966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:37,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:22:37,056 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:37,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [599492622] [2022-03-18 05:22:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [599492622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:37,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:22:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188208515] [2022-03-18 05:22:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:37,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 05:22:37,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 05:22:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:37,057 INFO L87 Difference]: Start difference. First operand 837 states and 1142 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:22:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:40,482 INFO L93 Difference]: Finished difference Result 984 states and 1382 transitions. [2022-03-18 05:22:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:22:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-03-18 05:22:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:40,491 INFO L225 Difference]: With dead ends: 984 [2022-03-18 05:22:40,492 INFO L226 Difference]: Without dead ends: 958 [2022-03-18 05:22:40,492 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:22:40,493 INFO L912 BasicCegarLoop]: 636 mSDtfsCounter, 2002 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 5900 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 5900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:40,493 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2006 Valid, 3175 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 5900 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-18 05:22:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-03-18 05:22:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 836. [2022-03-18 05:22:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 657 states have (on average 1.339421613394216) internal successors, (880), 670 states have internal predecessors, (880), 108 states have call successors, (108), 51 states have call predecessors, (108), 70 states have return successors, (143), 121 states have call predecessors, (143), 101 states have call successors, (143) [2022-03-18 05:22:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1131 transitions. [2022-03-18 05:22:40,716 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1131 transitions. Word has length 59 [2022-03-18 05:22:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:40,716 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1131 transitions. [2022-03-18 05:22:40,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:22:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1131 transitions. [2022-03-18 05:22:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 05:22:40,717 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:40,718 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:40,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-18 05:22:40,718 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1081135518, now seen corresponding path program 1 times [2022-03-18 05:22:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:40,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [189625406] [2022-03-18 05:22:40,718 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1081135518, now seen corresponding path program 2 times [2022-03-18 05:22:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:40,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231847935] [2022-03-18 05:22:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:40,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231847935] [2022-03-18 05:22:40,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231847935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:40,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:40,938 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [189625406] [2022-03-18 05:22:40,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [189625406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:40,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231491391] [2022-03-18 05:22:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:40,939 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:22:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:22:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:40,940 INFO L87 Difference]: Start difference. First operand 836 states and 1131 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:43,423 INFO L93 Difference]: Finished difference Result 973 states and 1356 transitions. [2022-03-18 05:22:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:22:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 05:22:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:43,430 INFO L225 Difference]: With dead ends: 973 [2022-03-18 05:22:43,430 INFO L226 Difference]: Without dead ends: 953 [2022-03-18 05:22:43,430 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:22:43,431 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 941 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 5082 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 5479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 5082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:43,431 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2903 Invalid, 5479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 5082 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-18 05:22:43,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-03-18 05:22:43,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 833. [2022-03-18 05:22:43,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 655 states have (on average 1.3389312977099237) internal successors, (877), 668 states have internal predecessors, (877), 107 states have call successors, (107), 51 states have call predecessors, (107), 70 states have return successors, (142), 120 states have call predecessors, (142), 100 states have call successors, (142) [2022-03-18 05:22:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1126 transitions. [2022-03-18 05:22:43,673 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1126 transitions. Word has length 58 [2022-03-18 05:22:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:43,673 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1126 transitions. [2022-03-18 05:22:43,673 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1126 transitions. [2022-03-18 05:22:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 05:22:43,675 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:43,675 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] [2022-03-18 05:22:43,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 05:22:43,675 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1820752266, now seen corresponding path program 1 times [2022-03-18 05:22:43,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:43,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1011419521] [2022-03-18 05:22:43,675 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1820752266, now seen corresponding path program 2 times [2022-03-18 05:22:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:43,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557875419] [2022-03-18 05:22:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:22:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:43,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557875419] [2022-03-18 05:22:43,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557875419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:43,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:43,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:43,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:43,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1011419521] [2022-03-18 05:22:43,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1011419521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:43,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:43,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823294995] [2022-03-18 05:22:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:43,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:22:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:22:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:43,897 INFO L87 Difference]: Start difference. First operand 833 states and 1126 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 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) [2022-03-18 05:22:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:46,278 INFO L93 Difference]: Finished difference Result 1006 states and 1388 transitions. [2022-03-18 05:22:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:22:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 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 [2022-03-18 05:22:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:46,281 INFO L225 Difference]: With dead ends: 1006 [2022-03-18 05:22:46,282 INFO L226 Difference]: Without dead ends: 938 [2022-03-18 05:22:46,286 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:22:46,286 INFO L912 BasicCegarLoop]: 628 mSDtfsCounter, 673 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 4690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:46,286 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 2420 Invalid, 4690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4401 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-18 05:22:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-03-18 05:22:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 821. [2022-03-18 05:22:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 646 states have (on average 1.3343653250773995) internal successors, (862), 659 states have internal predecessors, (862), 104 states have call successors, (104), 51 states have call predecessors, (104), 70 states have return successors, (139), 117 states have call predecessors, (139), 97 states have call successors, (139) [2022-03-18 05:22:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1105 transitions. [2022-03-18 05:22:46,507 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1105 transitions. Word has length 59 [2022-03-18 05:22:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:46,507 INFO L478 AbstractCegarLoop]: Abstraction has 821 states and 1105 transitions. [2022-03-18 05:22:46,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 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) [2022-03-18 05:22:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1105 transitions. [2022-03-18 05:22:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:22:46,509 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:46,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:46,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 05:22:46,509 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash 600816654, now seen corresponding path program 1 times [2022-03-18 05:22:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1452240525] [2022-03-18 05:22:46,509 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash 600816654, now seen corresponding path program 2 times [2022-03-18 05:22:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:46,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280839366] [2022-03-18 05:22:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:22:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:46,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280839366] [2022-03-18 05:22:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280839366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:46,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:46,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:46,660 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:46,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1452240525] [2022-03-18 05:22:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1452240525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:46,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:46,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:46,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582030788] [2022-03-18 05:22:46,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:46,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:46,661 INFO L87 Difference]: Start difference. First operand 821 states and 1105 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:48,639 INFO L93 Difference]: Finished difference Result 1102 states and 1563 transitions. [2022-03-18 05:22:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-18 05:22:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:48,643 INFO L225 Difference]: With dead ends: 1102 [2022-03-18 05:22:48,643 INFO L226 Difference]: Without dead ends: 991 [2022-03-18 05:22:48,643 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:48,644 INFO L912 BasicCegarLoop]: 608 mSDtfsCounter, 400 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:48,644 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1570 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:22:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-18 05:22:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 828. [2022-03-18 05:22:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 651 states have (on average 1.3348694316436251) internal successors, (869), 665 states have internal predecessors, (869), 105 states have call successors, (105), 51 states have call predecessors, (105), 71 states have return successors, (147), 118 states have call predecessors, (147), 98 states have call successors, (147) [2022-03-18 05:22:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1121 transitions. [2022-03-18 05:22:48,945 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1121 transitions. Word has length 60 [2022-03-18 05:22:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:48,946 INFO L478 AbstractCegarLoop]: Abstraction has 828 states and 1121 transitions. [2022-03-18 05:22:48,946 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1121 transitions. [2022-03-18 05:22:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:22:48,947 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:48,947 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] [2022-03-18 05:22:48,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 05:22:48,947 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash 875576268, now seen corresponding path program 1 times [2022-03-18 05:22:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:48,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [350912900] [2022-03-18 05:22:48,948 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash 875576268, now seen corresponding path program 2 times [2022-03-18 05:22:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:48,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573584001] [2022-03-18 05:22:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:22:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:49,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:49,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573584001] [2022-03-18 05:22:49,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573584001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:49,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:49,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:49,158 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:49,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [350912900] [2022-03-18 05:22:49,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [350912900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:49,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:49,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350862164] [2022-03-18 05:22:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:49,159 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:22:49,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:22:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:49,159 INFO L87 Difference]: Start difference. First operand 828 states and 1121 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:51,197 INFO L93 Difference]: Finished difference Result 971 states and 1360 transitions. [2022-03-18 05:22:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:22:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 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 60 [2022-03-18 05:22:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:51,200 INFO L225 Difference]: With dead ends: 971 [2022-03-18 05:22:51,200 INFO L226 Difference]: Without dead ends: 946 [2022-03-18 05:22:51,201 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:22:51,201 INFO L912 BasicCegarLoop]: 633 mSDtfsCounter, 1274 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:51,201 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 2478 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 05:22:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-03-18 05:22:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 826. [2022-03-18 05:22:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 650 states have (on average 1.333846153846154) internal successors, (867), 664 states have internal predecessors, (867), 104 states have call successors, (104), 51 states have call predecessors, (104), 71 states have return successors, (146), 117 states have call predecessors, (146), 97 states have call successors, (146) [2022-03-18 05:22:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1117 transitions. [2022-03-18 05:22:51,481 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1117 transitions. Word has length 60 [2022-03-18 05:22:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:51,481 INFO L478 AbstractCegarLoop]: Abstraction has 826 states and 1117 transitions. [2022-03-18 05:22:51,481 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1117 transitions. [2022-03-18 05:22:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:22:51,483 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:51,483 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] [2022-03-18 05:22:51,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 05:22:51,483 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1391350355, now seen corresponding path program 1 times [2022-03-18 05:22:51,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:51,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1391090722] [2022-03-18 05:22:51,483 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1391350355, now seen corresponding path program 2 times [2022-03-18 05:22:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:51,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222627481] [2022-03-18 05:22:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:22:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222627481] [2022-03-18 05:22:51,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222627481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:51,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:51,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:51,652 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:51,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1391090722] [2022-03-18 05:22:51,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1391090722] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:51,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:51,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487940694] [2022-03-18 05:22:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:51,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:51,653 INFO L87 Difference]: Start difference. First operand 826 states and 1117 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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) [2022-03-18 05:22:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:53,280 INFO L93 Difference]: Finished difference Result 980 states and 1364 transitions. [2022-03-18 05:22:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:22:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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 [2022-03-18 05:22:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:53,282 INFO L225 Difference]: With dead ends: 980 [2022-03-18 05:22:53,282 INFO L226 Difference]: Without dead ends: 948 [2022-03-18 05:22:53,283 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:53,283 INFO L912 BasicCegarLoop]: 612 mSDtfsCounter, 645 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:53,283 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 1756 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:22:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-03-18 05:22:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 826. [2022-03-18 05:22:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 650 states have (on average 1.3323076923076924) internal successors, (866), 664 states have internal predecessors, (866), 104 states have call successors, (104), 51 states have call predecessors, (104), 71 states have return successors, (146), 117 states have call predecessors, (146), 97 states have call successors, (146) [2022-03-18 05:22:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1116 transitions. [2022-03-18 05:22:53,515 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1116 transitions. Word has length 60 [2022-03-18 05:22:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:53,515 INFO L478 AbstractCegarLoop]: Abstraction has 826 states and 1116 transitions. [2022-03-18 05:22:53,515 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 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) [2022-03-18 05:22:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1116 transitions. [2022-03-18 05:22:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:22:53,517 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:53,517 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] [2022-03-18 05:22:53,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 05:22:53,517 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1900823445, now seen corresponding path program 1 times [2022-03-18 05:22:53,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [695174674] [2022-03-18 05:22:53,517 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1900823445, now seen corresponding path program 2 times [2022-03-18 05:22:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876720928] [2022-03-18 05:22:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:53,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:22:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:53,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876720928] [2022-03-18 05:22:53,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876720928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:53,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:53,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:53,798 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:53,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [695174674] [2022-03-18 05:22:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [695174674] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:53,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:53,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:22:53,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793841339] [2022-03-18 05:22:53,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:53,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:22:53,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:22:53,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:53,799 INFO L87 Difference]: Start difference. First operand 826 states and 1116 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 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) [2022-03-18 05:22:56,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:56,072 INFO L93 Difference]: Finished difference Result 987 states and 1381 transitions. [2022-03-18 05:22:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:22:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 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 60 [2022-03-18 05:22:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:56,074 INFO L225 Difference]: With dead ends: 987 [2022-03-18 05:22:56,074 INFO L226 Difference]: Without dead ends: 935 [2022-03-18 05:22:56,087 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:22:56,087 INFO L912 BasicCegarLoop]: 627 mSDtfsCounter, 971 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 4521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:56,088 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2660 Invalid, 4521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-18 05:22:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-03-18 05:22:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 818. [2022-03-18 05:22:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 644 states have (on average 1.3276397515527951) internal successors, (855), 658 states have internal predecessors, (855), 102 states have call successors, (102), 51 states have call predecessors, (102), 71 states have return successors, (144), 115 states have call predecessors, (144), 95 states have call successors, (144) [2022-03-18 05:22:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1101 transitions. [2022-03-18 05:22:56,302 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1101 transitions. Word has length 60 [2022-03-18 05:22:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:56,302 INFO L478 AbstractCegarLoop]: Abstraction has 818 states and 1101 transitions. [2022-03-18 05:22:56,303 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 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) [2022-03-18 05:22:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1101 transitions. [2022-03-18 05:22:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 05:22:56,304 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:56,304 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] [2022-03-18 05:22:56,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 05:22:56,304 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash -384399656, now seen corresponding path program 1 times [2022-03-18 05:22:56,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:56,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [543322346] [2022-03-18 05:22:56,305 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -384399656, now seen corresponding path program 2 times [2022-03-18 05:22:56,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:56,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368109942] [2022-03-18 05:22:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:56,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:22:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:56,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:56,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368109942] [2022-03-18 05:22:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368109942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:56,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:56,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:56,443 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:56,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [543322346] [2022-03-18 05:22:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [543322346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:56,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:56,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033603940] [2022-03-18 05:22:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:56,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:56,444 INFO L87 Difference]: Start difference. First operand 818 states and 1101 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:57,982 INFO L93 Difference]: Finished difference Result 983 states and 1382 transitions. [2022-03-18 05:22:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:22:57,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-03-18 05:22:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:57,998 INFO L225 Difference]: With dead ends: 983 [2022-03-18 05:22:57,999 INFO L226 Difference]: Without dead ends: 949 [2022-03-18 05:22:57,999 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:57,999 INFO L912 BasicCegarLoop]: 593 mSDtfsCounter, 654 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:58,000 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1481 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 05:22:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-18 05:22:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 822. [2022-03-18 05:22:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 646 states have (on average 1.326625386996904) internal successors, (857), 662 states have internal predecessors, (857), 102 states have call successors, (102), 51 states have call predecessors, (102), 73 states have return successors, (160), 115 states have call predecessors, (160), 95 states have call successors, (160) [2022-03-18 05:22:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1119 transitions. [2022-03-18 05:22:58,266 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1119 transitions. Word has length 61 [2022-03-18 05:22:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:58,266 INFO L478 AbstractCegarLoop]: Abstraction has 822 states and 1119 transitions. [2022-03-18 05:22:58,266 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1119 transitions. [2022-03-18 05:22:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:22:58,267 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:58,268 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] [2022-03-18 05:22:58,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 05:22:58,268 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 73194234, now seen corresponding path program 1 times [2022-03-18 05:22:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [620318719] [2022-03-18 05:22:58,268 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 73194234, now seen corresponding path program 2 times [2022-03-18 05:22:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178396101] [2022-03-18 05:22:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:58,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:22:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178396101] [2022-03-18 05:22:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178396101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:22:58,605 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:58,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [620318719] [2022-03-18 05:22:58,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [620318719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:58,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:58,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:22:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126195581] [2022-03-18 05:22:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:58,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 05:22:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 05:22:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:58,607 INFO L87 Difference]: Start difference. First operand 822 states and 1119 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:01,582 INFO L93 Difference]: Finished difference Result 961 states and 1352 transitions. [2022-03-18 05:23:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:23:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-03-18 05:23:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:01,586 INFO L225 Difference]: With dead ends: 961 [2022-03-18 05:23:01,586 INFO L226 Difference]: Without dead ends: 937 [2022-03-18 05:23:01,587 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:23:01,588 INFO L912 BasicCegarLoop]: 592 mSDtfsCounter, 1489 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 5390 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 6006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 5390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:01,588 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 3156 Invalid, 6006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 5390 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 05:23:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-03-18 05:23:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 820. [2022-03-18 05:23:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 645 states have (on average 1.3255813953488371) internal successors, (855), 661 states have internal predecessors, (855), 101 states have call successors, (101), 51 states have call predecessors, (101), 73 states have return successors, (159), 114 states have call predecessors, (159), 94 states have call successors, (159) [2022-03-18 05:23:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1115 transitions. [2022-03-18 05:23:01,883 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1115 transitions. Word has length 63 [2022-03-18 05:23:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:01,884 INFO L478 AbstractCegarLoop]: Abstraction has 820 states and 1115 transitions. [2022-03-18 05:23:01,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1115 transitions. [2022-03-18 05:23:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:23:01,885 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:01,885 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:01,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-18 05:23:01,885 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash -395524383, now seen corresponding path program 1 times [2022-03-18 05:23:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [340845074] [2022-03-18 05:23:01,886 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash -395524383, now seen corresponding path program 2 times [2022-03-18 05:23:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:01,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439403537] [2022-03-18 05:23:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:23:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439403537] [2022-03-18 05:23:02,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439403537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:02,187 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [340845074] [2022-03-18 05:23:02,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [340845074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:02,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560662049] [2022-03-18 05:23:02,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:02,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 05:23:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 05:23:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:02,188 INFO L87 Difference]: Start difference. First operand 820 states and 1115 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:05,473 INFO L93 Difference]: Finished difference Result 961 states and 1350 transitions. [2022-03-18 05:23:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:23:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-03-18 05:23:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:05,477 INFO L225 Difference]: With dead ends: 961 [2022-03-18 05:23:05,477 INFO L226 Difference]: Without dead ends: 936 [2022-03-18 05:23:05,478 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:23:05,478 INFO L912 BasicCegarLoop]: 590 mSDtfsCounter, 1517 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 5493 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 6119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 5493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:05,479 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 3385 Invalid, 6119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 5493 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-18 05:23:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-18 05:23:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 818. [2022-03-18 05:23:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 644 states have (on average 1.3245341614906831) internal successors, (853), 660 states have internal predecessors, (853), 100 states have call successors, (100), 51 states have call predecessors, (100), 73 states have return successors, (158), 113 states have call predecessors, (158), 93 states have call successors, (158) [2022-03-18 05:23:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1111 transitions. [2022-03-18 05:23:05,834 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1111 transitions. Word has length 66 [2022-03-18 05:23:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:05,834 INFO L478 AbstractCegarLoop]: Abstraction has 818 states and 1111 transitions. [2022-03-18 05:23:05,834 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1111 transitions. [2022-03-18 05:23:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:23:05,836 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:05,836 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:05,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 05:23:05,837 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash 233977310, now seen corresponding path program 1 times [2022-03-18 05:23:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:05,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1843911844] [2022-03-18 05:23:05,837 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash 233977310, now seen corresponding path program 2 times [2022-03-18 05:23:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:05,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51138062] [2022-03-18 05:23:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 05:23:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51138062] [2022-03-18 05:23:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51138062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:23:06,168 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1843911844] [2022-03-18 05:23:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1843911844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-18 05:23:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170967121] [2022-03-18 05:23:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:06,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 05:23:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 05:23:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:06,169 INFO L87 Difference]: Start difference. First operand 818 states and 1111 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:09,318 INFO L93 Difference]: Finished difference Result 958 states and 1343 transitions. [2022-03-18 05:23:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:23:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-03-18 05:23:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:09,322 INFO L225 Difference]: With dead ends: 958 [2022-03-18 05:23:09,322 INFO L226 Difference]: Without dead ends: 934 [2022-03-18 05:23:09,322 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:23:09,323 INFO L912 BasicCegarLoop]: 567 mSDtfsCounter, 1189 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 5647 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 6137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 5647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:09,328 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 2938 Invalid, 6137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 5647 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 05:23:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-03-18 05:23:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 816. [2022-03-18 05:23:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 643 states have (on average 1.32348367029549) internal successors, (851), 659 states have internal predecessors, (851), 99 states have call successors, (99), 51 states have call predecessors, (99), 73 states have return successors, (157), 112 states have call predecessors, (157), 92 states have call successors, (157) [2022-03-18 05:23:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1107 transitions. [2022-03-18 05:23:09,691 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1107 transitions. Word has length 62 [2022-03-18 05:23:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:09,691 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1107 transitions. [2022-03-18 05:23:09,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1107 transitions. [2022-03-18 05:23:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:23:09,693 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:09,693 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:09,693 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 05:23:09,693 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1213250190, now seen corresponding path program 1 times [2022-03-18 05:23:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1763601945] [2022-03-18 05:23:09,694 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1213250190, now seen corresponding path program 2 times [2022-03-18 05:23:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603577325] [2022-03-18 05:23:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:09,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603577325] [2022-03-18 05:23:09,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603577325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:09,963 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:09,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1763601945] [2022-03-18 05:23:09,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1763601945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566619882] [2022-03-18 05:23:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:09,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:23:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:23:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:09,965 INFO L87 Difference]: Start difference. First operand 816 states and 1107 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:12,074 INFO L93 Difference]: Finished difference Result 949 states and 1332 transitions. [2022-03-18 05:23:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:12,074 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-18 05:23:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:12,077 INFO L225 Difference]: With dead ends: 949 [2022-03-18 05:23:12,077 INFO L226 Difference]: Without dead ends: 927 [2022-03-18 05:23:12,077 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:12,079 INFO L912 BasicCegarLoop]: 590 mSDtfsCounter, 600 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 5198 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 5439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 5198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:12,079 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 3046 Invalid, 5439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 5198 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 05:23:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-03-18 05:23:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 811. [2022-03-18 05:23:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 640 states have (on average 1.3234375) internal successors, (847), 656 states have internal predecessors, (847), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (155), 110 states have call predecessors, (155), 91 states have call successors, (155) [2022-03-18 05:23:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1100 transitions. [2022-03-18 05:23:12,406 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1100 transitions. Word has length 62 [2022-03-18 05:23:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:12,406 INFO L478 AbstractCegarLoop]: Abstraction has 811 states and 1100 transitions. [2022-03-18 05:23:12,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1100 transitions. [2022-03-18 05:23:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:23:12,408 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:12,408 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] [2022-03-18 05:23:12,408 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 05:23:12,408 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -20126443, now seen corresponding path program 1 times [2022-03-18 05:23:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:12,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [171224649] [2022-03-18 05:23:12,409 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -20126443, now seen corresponding path program 2 times [2022-03-18 05:23:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941818713] [2022-03-18 05:23:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941818713] [2022-03-18 05:23:12,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941818713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:12,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:12,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:12,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [171224649] [2022-03-18 05:23:12,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [171224649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:12,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:12,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117917860] [2022-03-18 05:23:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:12,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:12,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:12,552 INFO L87 Difference]: Start difference. First operand 811 states and 1100 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:13,630 INFO L93 Difference]: Finished difference Result 1144 states and 1570 transitions. [2022-03-18 05:23:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:23:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-18 05:23:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:13,633 INFO L225 Difference]: With dead ends: 1144 [2022-03-18 05:23:13,633 INFO L226 Difference]: Without dead ends: 812 [2022-03-18 05:23:13,635 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:23:13,635 INFO L912 BasicCegarLoop]: 523 mSDtfsCounter, 909 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:13,636 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 884 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-18 05:23:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 703. [2022-03-18 05:23:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 555 states have (on average 1.3099099099099099) internal successors, (727), 571 states have internal predecessors, (727), 85 states have call successors, (85), 45 states have call predecessors, (85), 62 states have return successors, (109), 93 states have call predecessors, (109), 78 states have call successors, (109) [2022-03-18 05:23:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 921 transitions. [2022-03-18 05:23:13,863 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 921 transitions. Word has length 63 [2022-03-18 05:23:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:13,863 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 921 transitions. [2022-03-18 05:23:13,863 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 921 transitions. [2022-03-18 05:23:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:23:13,865 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:13,865 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] [2022-03-18 05:23:13,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-18 05:23:13,865 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1125022054, now seen corresponding path program 1 times [2022-03-18 05:23:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:13,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2071067850] [2022-03-18 05:23:13,865 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1125022054, now seen corresponding path program 2 times [2022-03-18 05:23:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:13,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416946467] [2022-03-18 05:23:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416946467] [2022-03-18 05:23:14,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416946467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:14,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:14,109 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2071067850] [2022-03-18 05:23:14,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2071067850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:14,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854776061] [2022-03-18 05:23:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:14,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:23:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:23:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:14,110 INFO L87 Difference]: Start difference. First operand 703 states and 921 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:16,930 INFO L93 Difference]: Finished difference Result 780 states and 1034 transitions. [2022-03-18 05:23:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:16,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-18 05:23:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:16,933 INFO L225 Difference]: With dead ends: 780 [2022-03-18 05:23:16,933 INFO L226 Difference]: Without dead ends: 758 [2022-03-18 05:23:16,934 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:23:16,936 INFO L912 BasicCegarLoop]: 525 mSDtfsCounter, 841 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 5817 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 6139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 5817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:16,936 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 2683 Invalid, 6139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 5817 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-18 05:23:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-18 05:23:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 698. [2022-03-18 05:23:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 552 states have (on average 1.309782608695652) internal successors, (723), 568 states have internal predecessors, (723), 84 states have call successors, (84), 45 states have call predecessors, (84), 61 states have return successors, (107), 91 states have call predecessors, (107), 77 states have call successors, (107) [2022-03-18 05:23:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 914 transitions. [2022-03-18 05:23:17,306 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 914 transitions. Word has length 63 [2022-03-18 05:23:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:17,306 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 914 transitions. [2022-03-18 05:23:17,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 914 transitions. [2022-03-18 05:23:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:23:17,308 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:17,308 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] [2022-03-18 05:23:17,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-18 05:23:17,308 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -871017626, now seen corresponding path program 1 times [2022-03-18 05:23:17,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1947002670] [2022-03-18 05:23:17,309 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -871017626, now seen corresponding path program 2 times [2022-03-18 05:23:17,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:17,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218083921] [2022-03-18 05:23:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:23:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:23:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:17,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218083921] [2022-03-18 05:23:17,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218083921] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:17,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:17,466 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1947002670] [2022-03-18 05:23:17,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1947002670] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:17,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633898835] [2022-03-18 05:23:17,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:17,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:17,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:17,468 INFO L87 Difference]: Start difference. First operand 698 states and 914 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:19,234 INFO L93 Difference]: Finished difference Result 971 states and 1279 transitions. [2022-03-18 05:23:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:23:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-18 05:23:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:19,238 INFO L225 Difference]: With dead ends: 971 [2022-03-18 05:23:19,238 INFO L226 Difference]: Without dead ends: 834 [2022-03-18 05:23:19,238 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:19,239 INFO L912 BasicCegarLoop]: 536 mSDtfsCounter, 844 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:19,239 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 1065 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:23:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-03-18 05:23:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2022-03-18 05:23:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 567 states have (on average 1.3015873015873016) internal successors, (738), 582 states have internal predecessors, (738), 84 states have call successors, (84), 48 states have call predecessors, (84), 65 states have return successors, (106), 93 states have call predecessors, (106), 78 states have call successors, (106) [2022-03-18 05:23:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 928 transitions. [2022-03-18 05:23:19,470 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 928 transitions. Word has length 67 [2022-03-18 05:23:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:19,470 INFO L478 AbstractCegarLoop]: Abstraction has 717 states and 928 transitions. [2022-03-18 05:23:19,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 928 transitions. [2022-03-18 05:23:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:23:19,471 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:19,471 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:19,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-18 05:23:19,471 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 505400329, now seen corresponding path program 1 times [2022-03-18 05:23:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [835176805] [2022-03-18 05:23:19,472 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 505400329, now seen corresponding path program 2 times [2022-03-18 05:23:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925530638] [2022-03-18 05:23:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:23:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:19,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:19,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925530638] [2022-03-18 05:23:19,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925530638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:19,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:19,641 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:19,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [835176805] [2022-03-18 05:23:19,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [835176805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:19,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:19,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709274265] [2022-03-18 05:23:19,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:19,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:19,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:19,642 INFO L87 Difference]: Start difference. First operand 717 states and 928 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 05:23:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:21,126 INFO L93 Difference]: Finished difference Result 908 states and 1199 transitions. [2022-03-18 05:23:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:23:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-03-18 05:23:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:21,128 INFO L225 Difference]: With dead ends: 908 [2022-03-18 05:23:21,128 INFO L226 Difference]: Without dead ends: 788 [2022-03-18 05:23:21,129 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:21,129 INFO L912 BasicCegarLoop]: 481 mSDtfsCounter, 416 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:21,129 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 934 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:23:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-03-18 05:23:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 717. [2022-03-18 05:23:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 567 states have (on average 1.2962962962962963) internal successors, (735), 582 states have internal predecessors, (735), 84 states have call successors, (84), 48 states have call predecessors, (84), 65 states have return successors, (106), 93 states have call predecessors, (106), 78 states have call successors, (106) [2022-03-18 05:23:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 925 transitions. [2022-03-18 05:23:21,405 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 925 transitions. Word has length 66 [2022-03-18 05:23:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:21,405 INFO L478 AbstractCegarLoop]: Abstraction has 717 states and 925 transitions. [2022-03-18 05:23:21,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 05:23:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 925 transitions. [2022-03-18 05:23:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 05:23:21,407 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:21,407 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] [2022-03-18 05:23:21,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-18 05:23:21,407 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1348887076, now seen corresponding path program 1 times [2022-03-18 05:23:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:21,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1967931862] [2022-03-18 05:23:21,424 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1348887076, now seen corresponding path program 2 times [2022-03-18 05:23:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:21,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943658505] [2022-03-18 05:23:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:21,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:23:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:21,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943658505] [2022-03-18 05:23:21,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943658505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:21,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:21,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:21,688 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1967931862] [2022-03-18 05:23:21,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1967931862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:21,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:21,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442303689] [2022-03-18 05:23:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:21,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:21,690 INFO L87 Difference]: Start difference. First operand 717 states and 925 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:23,453 INFO L93 Difference]: Finished difference Result 852 states and 1114 transitions. [2022-03-18 05:23:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 05:23:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-03-18 05:23:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:23,459 INFO L225 Difference]: With dead ends: 852 [2022-03-18 05:23:23,459 INFO L226 Difference]: Without dead ends: 819 [2022-03-18 05:23:23,459 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:23,460 INFO L912 BasicCegarLoop]: 502 mSDtfsCounter, 1601 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:23,460 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1355 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:23:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-18 05:23:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2022-03-18 05:23:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 572 states have (on average 1.2954545454545454) internal successors, (741), 587 states have internal predecessors, (741), 85 states have call successors, (85), 48 states have call predecessors, (85), 65 states have return successors, (107), 94 states have call predecessors, (107), 79 states have call successors, (107) [2022-03-18 05:23:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 933 transitions. [2022-03-18 05:23:23,712 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 933 transitions. Word has length 65 [2022-03-18 05:23:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:23,713 INFO L478 AbstractCegarLoop]: Abstraction has 723 states and 933 transitions. [2022-03-18 05:23:23,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-18 05:23:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 933 transitions. [2022-03-18 05:23:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:23:23,715 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:23,715 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] [2022-03-18 05:23:23,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-18 05:23:23,715 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1649412610, now seen corresponding path program 1 times [2022-03-18 05:23:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:23,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1633751412] [2022-03-18 05:23:23,716 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1649412610, now seen corresponding path program 2 times [2022-03-18 05:23:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:23,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122466236] [2022-03-18 05:23:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122466236] [2022-03-18 05:23:24,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122466236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:24,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:24,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:24,104 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:24,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1633751412] [2022-03-18 05:23:24,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1633751412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:24,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:24,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655270023] [2022-03-18 05:23:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:24,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 05:23:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 05:23:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:24,105 INFO L87 Difference]: Start difference. First operand 723 states and 933 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:27,242 INFO L93 Difference]: Finished difference Result 816 states and 1069 transitions. [2022-03-18 05:23:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:23:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-03-18 05:23:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:27,246 INFO L225 Difference]: With dead ends: 816 [2022-03-18 05:23:27,246 INFO L226 Difference]: Without dead ends: 791 [2022-03-18 05:23:27,246 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:23:27,247 INFO L912 BasicCegarLoop]: 516 mSDtfsCounter, 1701 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 5967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:27,247 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 2872 Invalid, 5967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 05:23:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-03-18 05:23:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 721. [2022-03-18 05:23:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 571 states have (on average 1.2942206654991244) internal successors, (739), 586 states have internal predecessors, (739), 84 states have call successors, (84), 48 states have call predecessors, (84), 65 states have return successors, (106), 93 states have call predecessors, (106), 78 states have call successors, (106) [2022-03-18 05:23:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 929 transitions. [2022-03-18 05:23:27,643 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 929 transitions. Word has length 67 [2022-03-18 05:23:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:27,643 INFO L478 AbstractCegarLoop]: Abstraction has 721 states and 929 transitions. [2022-03-18 05:23:27,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 929 transitions. [2022-03-18 05:23:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:23:27,645 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:27,645 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:27,645 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-18 05:23:27,646 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash 257334910, now seen corresponding path program 1 times [2022-03-18 05:23:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [763941338] [2022-03-18 05:23:27,647 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 257334910, now seen corresponding path program 2 times [2022-03-18 05:23:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:27,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166760168] [2022-03-18 05:23:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 05:23:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:27,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:27,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166760168] [2022-03-18 05:23:27,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166760168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:27,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:27,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:27,825 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [763941338] [2022-03-18 05:23:27,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [763941338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:27,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:27,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763413226] [2022-03-18 05:23:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:27,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:27,825 INFO L87 Difference]: Start difference. First operand 721 states and 929 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:29,403 INFO L93 Difference]: Finished difference Result 847 states and 1100 transitions. [2022-03-18 05:23:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:23:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-18 05:23:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:29,406 INFO L225 Difference]: With dead ends: 847 [2022-03-18 05:23:29,406 INFO L226 Difference]: Without dead ends: 793 [2022-03-18 05:23:29,406 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:29,406 INFO L912 BasicCegarLoop]: 504 mSDtfsCounter, 591 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:29,406 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 1527 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:23:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-03-18 05:23:29,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 721. [2022-03-18 05:23:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 571 states have (on average 1.2907180385288968) internal successors, (737), 586 states have internal predecessors, (737), 84 states have call successors, (84), 48 states have call predecessors, (84), 65 states have return successors, (106), 93 states have call predecessors, (106), 78 states have call successors, (106) [2022-03-18 05:23:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 927 transitions. [2022-03-18 05:23:29,650 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 927 transitions. Word has length 66 [2022-03-18 05:23:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:29,650 INFO L478 AbstractCegarLoop]: Abstraction has 721 states and 927 transitions. [2022-03-18 05:23:29,650 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 927 transitions. [2022-03-18 05:23:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:23:29,652 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:29,652 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:29,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-18 05:23:29,652 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 958934784, now seen corresponding path program 1 times [2022-03-18 05:23:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [832770403] [2022-03-18 05:23:29,653 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 958934784, now seen corresponding path program 2 times [2022-03-18 05:23:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:29,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596504876] [2022-03-18 05:23:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 05:23:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596504876] [2022-03-18 05:23:29,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596504876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:29,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:29,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:29,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [832770403] [2022-03-18 05:23:29,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [832770403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:29,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:23:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524389747] [2022-03-18 05:23:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:29,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:23:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:23:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:29,829 INFO L87 Difference]: Start difference. First operand 721 states and 927 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:31,742 INFO L93 Difference]: Finished difference Result 818 states and 1067 transitions. [2022-03-18 05:23:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:31,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 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 66 [2022-03-18 05:23:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:31,744 INFO L225 Difference]: With dead ends: 818 [2022-03-18 05:23:31,744 INFO L226 Difference]: Without dead ends: 741 [2022-03-18 05:23:31,745 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:31,746 INFO L912 BasicCegarLoop]: 508 mSDtfsCounter, 922 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:31,746 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1876 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 05:23:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-03-18 05:23:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 684. [2022-03-18 05:23:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 541 states have (on average 1.277264325323475) internal successors, (691), 556 states have internal predecessors, (691), 77 states have call successors, (77), 48 states have call predecessors, (77), 65 states have return successors, (98), 86 states have call predecessors, (98), 71 states have call successors, (98) [2022-03-18 05:23:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 866 transitions. [2022-03-18 05:23:31,999 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 866 transitions. Word has length 66 [2022-03-18 05:23:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:31,999 INFO L478 AbstractCegarLoop]: Abstraction has 684 states and 866 transitions. [2022-03-18 05:23:31,999 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 866 transitions. [2022-03-18 05:23:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:23:32,000 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:32,000 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] [2022-03-18 05:23:32,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-18 05:23:32,001 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:32,001 INFO L85 PathProgramCache]: Analyzing trace with hash -896433839, now seen corresponding path program 1 times [2022-03-18 05:23:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:32,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1162591076] [2022-03-18 05:23:32,001 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -896433839, now seen corresponding path program 2 times [2022-03-18 05:23:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:32,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005190292] [2022-03-18 05:23:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-18 05:23:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005190292] [2022-03-18 05:23:32,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005190292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:32,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:32,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:32,178 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1162591076] [2022-03-18 05:23:32,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1162591076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:32,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:32,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:32,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011483187] [2022-03-18 05:23:32,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:32,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:32,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:32,179 INFO L87 Difference]: Start difference. First operand 684 states and 866 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:33,637 INFO L93 Difference]: Finished difference Result 769 states and 981 transitions. [2022-03-18 05:23:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:33,637 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-18 05:23:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:33,639 INFO L225 Difference]: With dead ends: 769 [2022-03-18 05:23:33,639 INFO L226 Difference]: Without dead ends: 730 [2022-03-18 05:23:33,640 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:23:33,641 INFO L912 BasicCegarLoop]: 451 mSDtfsCounter, 523 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:33,641 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1210 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 05:23:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-18 05:23:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 679. [2022-03-18 05:23:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 537 states have (on average 1.277467411545624) internal successors, (686), 552 states have internal predecessors, (686), 76 states have call successors, (76), 48 states have call predecessors, (76), 65 states have return successors, (97), 85 states have call predecessors, (97), 70 states have call successors, (97) [2022-03-18 05:23:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 859 transitions. [2022-03-18 05:23:33,949 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 859 transitions. Word has length 67 [2022-03-18 05:23:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:33,949 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 859 transitions. [2022-03-18 05:23:33,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 859 transitions. [2022-03-18 05:23:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:23:33,951 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:33,951 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] [2022-03-18 05:23:33,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-18 05:23:33,951 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1676375305, now seen corresponding path program 1 times [2022-03-18 05:23:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [993119369] [2022-03-18 05:23:33,952 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1676375305, now seen corresponding path program 2 times [2022-03-18 05:23:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734650389] [2022-03-18 05:23:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734650389] [2022-03-18 05:23:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734650389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:34,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:34,162 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [993119369] [2022-03-18 05:23:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [993119369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:34,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203917262] [2022-03-18 05:23:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:34,163 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:34,163 INFO L87 Difference]: Start difference. First operand 679 states and 859 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:35,857 INFO L93 Difference]: Finished difference Result 848 states and 1087 transitions. [2022-03-18 05:23:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-03-18 05:23:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:35,860 INFO L225 Difference]: With dead ends: 848 [2022-03-18 05:23:35,860 INFO L226 Difference]: Without dead ends: 836 [2022-03-18 05:23:35,861 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:35,862 INFO L912 BasicCegarLoop]: 470 mSDtfsCounter, 712 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:35,862 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 950 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:23:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-03-18 05:23:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 725. [2022-03-18 05:23:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 573 states have (on average 1.2705061082024434) internal successors, (728), 590 states have internal predecessors, (728), 78 states have call successors, (78), 50 states have call predecessors, (78), 73 states have return successors, (105), 93 states have call predecessors, (105), 72 states have call successors, (105) [2022-03-18 05:23:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 911 transitions. [2022-03-18 05:23:36,218 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 911 transitions. Word has length 67 [2022-03-18 05:23:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:36,218 INFO L478 AbstractCegarLoop]: Abstraction has 725 states and 911 transitions. [2022-03-18 05:23:36,218 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 911 transitions. [2022-03-18 05:23:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:23:36,219 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:36,219 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:36,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-18 05:23:36,220 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 871891881, now seen corresponding path program 1 times [2022-03-18 05:23:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:36,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1910719153] [2022-03-18 05:23:36,220 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 871891881, now seen corresponding path program 2 times [2022-03-18 05:23:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:36,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115327070] [2022-03-18 05:23:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:36,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:36,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115327070] [2022-03-18 05:23:36,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115327070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:36,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:36,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:36,440 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1910719153] [2022-03-18 05:23:36,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1910719153] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:36,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:36,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931609354] [2022-03-18 05:23:36,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:36,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:36,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:36,441 INFO L87 Difference]: Start difference. First operand 725 states and 911 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:38,249 INFO L93 Difference]: Finished difference Result 842 states and 1076 transitions. [2022-03-18 05:23:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 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 68 [2022-03-18 05:23:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:38,251 INFO L225 Difference]: With dead ends: 842 [2022-03-18 05:23:38,251 INFO L226 Difference]: Without dead ends: 833 [2022-03-18 05:23:38,252 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:38,252 INFO L912 BasicCegarLoop]: 472 mSDtfsCounter, 1726 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:38,252 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 1046 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:23:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-18 05:23:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 725. [2022-03-18 05:23:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 573 states have (on average 1.2670157068062826) internal successors, (726), 590 states have internal predecessors, (726), 78 states have call successors, (78), 50 states have call predecessors, (78), 73 states have return successors, (105), 93 states have call predecessors, (105), 72 states have call successors, (105) [2022-03-18 05:23:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 909 transitions. [2022-03-18 05:23:38,475 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 909 transitions. Word has length 68 [2022-03-18 05:23:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:38,475 INFO L478 AbstractCegarLoop]: Abstraction has 725 states and 909 transitions. [2022-03-18 05:23:38,475 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 909 transitions. [2022-03-18 05:23:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 05:23:38,476 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:38,476 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] [2022-03-18 05:23:38,476 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-18 05:23:38,478 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash 881211856, now seen corresponding path program 1 times [2022-03-18 05:23:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:38,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [397626596] [2022-03-18 05:23:38,478 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash 881211856, now seen corresponding path program 2 times [2022-03-18 05:23:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:38,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26887176] [2022-03-18 05:23:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:23:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:23:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:38,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:38,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26887176] [2022-03-18 05:23:38,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26887176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:38,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:38,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:38,798 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:38,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [397626596] [2022-03-18 05:23:38,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [397626596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:38,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:38,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:23:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097600103] [2022-03-18 05:23:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:38,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 05:23:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 05:23:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:38,800 INFO L87 Difference]: Start difference. First operand 725 states and 909 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 05:23:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:41,499 INFO L93 Difference]: Finished difference Result 816 states and 1040 transitions. [2022-03-18 05:23:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:23:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-03-18 05:23:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:41,515 INFO L225 Difference]: With dead ends: 816 [2022-03-18 05:23:41,515 INFO L226 Difference]: Without dead ends: 791 [2022-03-18 05:23:41,516 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:23:41,516 INFO L912 BasicCegarLoop]: 458 mSDtfsCounter, 787 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 4941 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 4941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:41,516 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 2725 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 4941 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-18 05:23:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-03-18 05:23:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 723. [2022-03-18 05:23:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 572 states have (on average 1.2657342657342658) internal successors, (724), 589 states have internal predecessors, (724), 77 states have call successors, (77), 50 states have call predecessors, (77), 73 states have return successors, (104), 92 states have call predecessors, (104), 71 states have call successors, (104) [2022-03-18 05:23:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 905 transitions. [2022-03-18 05:23:41,762 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 905 transitions. Word has length 74 [2022-03-18 05:23:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:41,762 INFO L478 AbstractCegarLoop]: Abstraction has 723 states and 905 transitions. [2022-03-18 05:23:41,762 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 05:23:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 905 transitions. [2022-03-18 05:23:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:23:41,763 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:41,763 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:41,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-18 05:23:41,764 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1188604284, now seen corresponding path program 1 times [2022-03-18 05:23:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:41,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [577990914] [2022-03-18 05:23:41,764 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1188604284, now seen corresponding path program 2 times [2022-03-18 05:23:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:41,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355215455] [2022-03-18 05:23:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:41,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:42,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:42,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355215455] [2022-03-18 05:23:42,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355215455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:42,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:42,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:42,052 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:42,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [577990914] [2022-03-18 05:23:42,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [577990914] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:42,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:42,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:42,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086910502] [2022-03-18 05:23:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:42,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 05:23:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 05:23:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:23:42,053 INFO L87 Difference]: Start difference. First operand 723 states and 905 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:44,218 INFO L93 Difference]: Finished difference Result 797 states and 1008 transitions. [2022-03-18 05:23:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 05:23:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-03-18 05:23:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:44,221 INFO L225 Difference]: With dead ends: 797 [2022-03-18 05:23:44,221 INFO L226 Difference]: Without dead ends: 770 [2022-03-18 05:23:44,222 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 05:23:44,222 INFO L912 BasicCegarLoop]: 450 mSDtfsCounter, 1479 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 4838 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 5398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 4838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:44,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 2696 Invalid, 5398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 4838 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 05:23:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-03-18 05:23:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 720. [2022-03-18 05:23:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 570 states have (on average 1.2649122807017543) internal successors, (721), 587 states have internal predecessors, (721), 76 states have call successors, (76), 50 states have call predecessors, (76), 73 states have return successors, (103), 91 states have call predecessors, (103), 70 states have call successors, (103) [2022-03-18 05:23:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 900 transitions. [2022-03-18 05:23:44,462 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 900 transitions. Word has length 70 [2022-03-18 05:23:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:44,463 INFO L478 AbstractCegarLoop]: Abstraction has 720 states and 900 transitions. [2022-03-18 05:23:44,463 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:23:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 900 transitions. [2022-03-18 05:23:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:23:44,464 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:44,464 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:44,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-18 05:23:44,464 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1748590526, now seen corresponding path program 1 times [2022-03-18 05:23:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [425197706] [2022-03-18 05:23:44,465 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1748590526, now seen corresponding path program 2 times [2022-03-18 05:23:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600431598] [2022-03-18 05:23:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:23:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:44,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600431598] [2022-03-18 05:23:44,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600431598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:44,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:44,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:44,748 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:44,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [425197706] [2022-03-18 05:23:44,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [425197706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:44,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:44,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050033564] [2022-03-18 05:23:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:44,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:23:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:23:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:44,749 INFO L87 Difference]: Start difference. First operand 720 states and 900 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:46,749 INFO L93 Difference]: Finished difference Result 790 states and 998 transitions. [2022-03-18 05:23:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-03-18 05:23:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:46,751 INFO L225 Difference]: With dead ends: 790 [2022-03-18 05:23:46,751 INFO L226 Difference]: Without dead ends: 768 [2022-03-18 05:23:46,752 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:46,752 INFO L912 BasicCegarLoop]: 450 mSDtfsCounter, 467 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 4408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:46,752 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 2339 Invalid, 4408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-18 05:23:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-03-18 05:23:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 718. [2022-03-18 05:23:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 569 states have (on average 1.2636203866432338) internal successors, (719), 586 states have internal predecessors, (719), 75 states have call successors, (75), 50 states have call predecessors, (75), 73 states have return successors, (102), 90 states have call predecessors, (102), 69 states have call successors, (102) [2022-03-18 05:23:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 896 transitions. [2022-03-18 05:23:47,000 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 896 transitions. Word has length 72 [2022-03-18 05:23:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:47,000 INFO L478 AbstractCegarLoop]: Abstraction has 718 states and 896 transitions. [2022-03-18 05:23:47,000 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 896 transitions. [2022-03-18 05:23:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:47,002 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:47,002 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:47,002 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-18 05:23:47,002 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1016702716, now seen corresponding path program 1 times [2022-03-18 05:23:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1647514886] [2022-03-18 05:23:47,002 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1016702716, now seen corresponding path program 2 times [2022-03-18 05:23:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317513416] [2022-03-18 05:23:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:23:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:47,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:47,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317513416] [2022-03-18 05:23:47,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317513416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:47,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:47,303 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:47,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1647514886] [2022-03-18 05:23:47,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1647514886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:47,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:23:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40717220] [2022-03-18 05:23:47,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:47,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:23:47,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:23:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:47,304 INFO L87 Difference]: Start difference. First operand 718 states and 896 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:49,145 INFO L93 Difference]: Finished difference Result 785 states and 991 transitions. [2022-03-18 05:23:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:23:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 05:23:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:49,147 INFO L225 Difference]: With dead ends: 785 [2022-03-18 05:23:49,147 INFO L226 Difference]: Without dead ends: 754 [2022-03-18 05:23:49,147 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:23:49,147 INFO L912 BasicCegarLoop]: 440 mSDtfsCounter, 239 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 4537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:49,148 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2240 Invalid, 4537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:23:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-18 05:23:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 706. [2022-03-18 05:23:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 560 states have (on average 1.2642857142857142) internal successors, (708), 577 states have internal predecessors, (708), 73 states have call successors, (73), 50 states have call predecessors, (73), 72 states have return successors, (99), 87 states have call predecessors, (99), 67 states have call successors, (99) [2022-03-18 05:23:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 880 transitions. [2022-03-18 05:23:49,373 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 880 transitions. Word has length 69 [2022-03-18 05:23:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:49,373 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 880 transitions. [2022-03-18 05:23:49,373 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 880 transitions. [2022-03-18 05:23:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:49,374 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:49,374 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:49,374 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-18 05:23:49,374 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1926600916, now seen corresponding path program 1 times [2022-03-18 05:23:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1483992839] [2022-03-18 05:23:49,375 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1926600916, now seen corresponding path program 2 times [2022-03-18 05:23:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794675696] [2022-03-18 05:23:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:49,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794675696] [2022-03-18 05:23:49,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794675696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:49,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:49,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:49,506 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:49,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1483992839] [2022-03-18 05:23:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1483992839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:49,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:49,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340889580] [2022-03-18 05:23:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:49,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:49,508 INFO L87 Difference]: Start difference. First operand 706 states and 880 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:50,922 INFO L93 Difference]: Finished difference Result 788 states and 988 transitions. [2022-03-18 05:23:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-18 05:23:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:50,925 INFO L225 Difference]: With dead ends: 788 [2022-03-18 05:23:50,925 INFO L226 Difference]: Without dead ends: 749 [2022-03-18 05:23:50,925 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:23:50,926 INFO L912 BasicCegarLoop]: 420 mSDtfsCounter, 491 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:50,926 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1071 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-03-18 05:23:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 701. [2022-03-18 05:23:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 556 states have (on average 1.264388489208633) internal successors, (703), 573 states have internal predecessors, (703), 72 states have call successors, (72), 50 states have call predecessors, (72), 72 states have return successors, (98), 86 states have call predecessors, (98), 66 states have call successors, (98) [2022-03-18 05:23:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 873 transitions. [2022-03-18 05:23:51,209 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 873 transitions. Word has length 69 [2022-03-18 05:23:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:51,209 INFO L478 AbstractCegarLoop]: Abstraction has 701 states and 873 transitions. [2022-03-18 05:23:51,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 873 transitions. [2022-03-18 05:23:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:51,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:51,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:51,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-18 05:23:51,210 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash -51645449, now seen corresponding path program 1 times [2022-03-18 05:23:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:51,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [200868806] [2022-03-18 05:23:51,211 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash -51645449, now seen corresponding path program 2 times [2022-03-18 05:23:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:51,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048480366] [2022-03-18 05:23:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:23:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:51,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048480366] [2022-03-18 05:23:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048480366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:51,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:51,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:23:51,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:51,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [200868806] [2022-03-18 05:23:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [200868806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:51,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:51,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:23:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680101721] [2022-03-18 05:23:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:51,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 05:23:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 05:23:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:23:51,464 INFO L87 Difference]: Start difference. First operand 701 states and 873 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:53,010 INFO L93 Difference]: Finished difference Result 776 states and 976 transitions. [2022-03-18 05:23:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 05:23:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-18 05:23:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:53,013 INFO L225 Difference]: With dead ends: 776 [2022-03-18 05:23:53,013 INFO L226 Difference]: Without dead ends: 746 [2022-03-18 05:23:53,013 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:23:53,013 INFO L912 BasicCegarLoop]: 435 mSDtfsCounter, 705 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:53,014 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2059 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 05:23:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-03-18 05:23:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 698. [2022-03-18 05:23:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 554 states have (on average 1.263537906137184) internal successors, (700), 571 states have internal predecessors, (700), 71 states have call successors, (71), 50 states have call predecessors, (71), 72 states have return successors, (97), 85 states have call predecessors, (97), 65 states have call successors, (97) [2022-03-18 05:23:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 868 transitions. [2022-03-18 05:23:53,371 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 868 transitions. Word has length 69 [2022-03-18 05:23:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:53,371 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 868 transitions. [2022-03-18 05:23:53,371 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 868 transitions. [2022-03-18 05:23:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:53,372 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:53,372 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:53,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-18 05:23:53,372 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 618518284, now seen corresponding path program 1 times [2022-03-18 05:23:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [54856645] [2022-03-18 05:23:53,373 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 618518284, now seen corresponding path program 2 times [2022-03-18 05:23:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670882011] [2022-03-18 05:23:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670882011] [2022-03-18 05:23:53,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670882011] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:53,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:53,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:23:53,671 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:53,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [54856645] [2022-03-18 05:23:53,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [54856645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:53,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:53,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:23:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235827300] [2022-03-18 05:23:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:53,690 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 05:23:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 05:23:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:23:53,691 INFO L87 Difference]: Start difference. First operand 698 states and 868 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:55,650 INFO L93 Difference]: Finished difference Result 756 states and 950 transitions. [2022-03-18 05:23:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 05:23:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 05:23:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:55,652 INFO L225 Difference]: With dead ends: 756 [2022-03-18 05:23:55,652 INFO L226 Difference]: Without dead ends: 750 [2022-03-18 05:23:55,652 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:23:55,652 INFO L912 BasicCegarLoop]: 374 mSDtfsCounter, 789 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 3749 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 3749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:55,653 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 1669 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 3749 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:23:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-03-18 05:23:55,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 695. [2022-03-18 05:23:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 551 states have (on average 1.2577132486388385) internal successors, (693), 568 states have internal predecessors, (693), 71 states have call successors, (71), 50 states have call predecessors, (71), 72 states have return successors, (97), 85 states have call predecessors, (97), 65 states have call successors, (97) [2022-03-18 05:23:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 861 transitions. [2022-03-18 05:23:55,878 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 861 transitions. Word has length 69 [2022-03-18 05:23:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:55,878 INFO L478 AbstractCegarLoop]: Abstraction has 695 states and 861 transitions. [2022-03-18 05:23:55,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 861 transitions. [2022-03-18 05:23:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:55,879 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:55,879 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, 1, 1, 1, 1, 1] [2022-03-18 05:23:55,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-18 05:23:55,879 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 618241454, now seen corresponding path program 1 times [2022-03-18 05:23:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:55,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1309054617] [2022-03-18 05:23:55,880 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 618241454, now seen corresponding path program 2 times [2022-03-18 05:23:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:55,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111113257] [2022-03-18 05:23:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:55,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111113257] [2022-03-18 05:23:56,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111113257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:56,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:56,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:56,021 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1309054617] [2022-03-18 05:23:56,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1309054617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:56,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:56,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344145763] [2022-03-18 05:23:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:56,021 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:56,022 INFO L87 Difference]: Start difference. First operand 695 states and 861 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:57,589 INFO L93 Difference]: Finished difference Result 805 states and 1014 transitions. [2022-03-18 05:23:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:23:57,590 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), 3 states have call successors, (9), 9 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 69 [2022-03-18 05:23:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:57,592 INFO L225 Difference]: With dead ends: 805 [2022-03-18 05:23:57,592 INFO L226 Difference]: Without dead ends: 770 [2022-03-18 05:23:57,593 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:23:57,593 INFO L912 BasicCegarLoop]: 434 mSDtfsCounter, 1617 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:57,593 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 925 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-03-18 05:23:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 666. [2022-03-18 05:23:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 527 states have (on average 1.256166982922201) internal successors, (662), 543 states have internal predecessors, (662), 70 states have call successors, (70), 49 states have call predecessors, (70), 68 states have return successors, (93), 81 states have call predecessors, (93), 64 states have call successors, (93) [2022-03-18 05:23:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 825 transitions. [2022-03-18 05:23:57,937 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 825 transitions. Word has length 69 [2022-03-18 05:23:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:57,937 INFO L478 AbstractCegarLoop]: Abstraction has 666 states and 825 transitions. [2022-03-18 05:23:57,937 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), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 825 transitions. [2022-03-18 05:23:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:23:57,938 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:57,938 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:57,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-18 05:23:57,938 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 711441589, now seen corresponding path program 1 times [2022-03-18 05:23:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:57,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1274160734] [2022-03-18 05:23:57,941 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 711441589, now seen corresponding path program 2 times [2022-03-18 05:23:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:57,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118263503] [2022-03-18 05:23:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:57,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:23:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:58,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118263503] [2022-03-18 05:23:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118263503] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:58,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:58,037 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:58,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1274160734] [2022-03-18 05:23:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1274160734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:58,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:23:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96365131] [2022-03-18 05:23:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:58,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:23:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:23:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:23:58,038 INFO L87 Difference]: Start difference. First operand 666 states and 825 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:59,263 INFO L93 Difference]: Finished difference Result 740 states and 928 transitions. [2022-03-18 05:23:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:23:59,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 05:23:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:59,265 INFO L225 Difference]: With dead ends: 740 [2022-03-18 05:23:59,266 INFO L226 Difference]: Without dead ends: 700 [2022-03-18 05:23:59,266 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:59,266 INFO L912 BasicCegarLoop]: 431 mSDtfsCounter, 608 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:59,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 821 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:23:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-18 05:23:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 648. [2022-03-18 05:23:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 514 states have (on average 1.2490272373540856) internal successors, (642), 529 states have internal predecessors, (642), 69 states have call successors, (69), 48 states have call predecessors, (69), 64 states have return successors, (89), 77 states have call predecessors, (89), 63 states have call successors, (89) [2022-03-18 05:23:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 800 transitions. [2022-03-18 05:23:59,612 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 800 transitions. Word has length 69 [2022-03-18 05:23:59,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:59,612 INFO L478 AbstractCegarLoop]: Abstraction has 648 states and 800 transitions. [2022-03-18 05:23:59,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 800 transitions. [2022-03-18 05:23:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:23:59,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:59,614 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] [2022-03-18 05:23:59,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-18 05:23:59,614 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -645591887, now seen corresponding path program 1 times [2022-03-18 05:23:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:59,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [803104283] [2022-03-18 05:23:59,615 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash -645591887, now seen corresponding path program 2 times [2022-03-18 05:23:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:59,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124147997] [2022-03-18 05:23:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:59,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:23:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:23:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:23:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:59,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124147997] [2022-03-18 05:23:59,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124147997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:59,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:59,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:59,778 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:59,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [803104283] [2022-03-18 05:23:59,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [803104283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:59,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:59,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429149511] [2022-03-18 05:23:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:59,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:23:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:23:59,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:59,779 INFO L87 Difference]: Start difference. First operand 648 states and 800 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:01,321 INFO L93 Difference]: Finished difference Result 738 states and 917 transitions. [2022-03-18 05:24:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:24:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-18 05:24:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:01,324 INFO L225 Difference]: With dead ends: 738 [2022-03-18 05:24:01,324 INFO L226 Difference]: Without dead ends: 700 [2022-03-18 05:24:01,324 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:24:01,324 INFO L912 BasicCegarLoop]: 419 mSDtfsCounter, 273 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:01,324 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1251 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:24:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-03-18 05:24:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 648. [2022-03-18 05:24:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 514 states have (on average 1.2470817120622568) internal successors, (641), 529 states have internal predecessors, (641), 69 states have call successors, (69), 48 states have call predecessors, (69), 64 states have return successors, (89), 77 states have call predecessors, (89), 63 states have call successors, (89) [2022-03-18 05:24:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 799 transitions. [2022-03-18 05:24:01,680 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 799 transitions. Word has length 71 [2022-03-18 05:24:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:01,680 INFO L478 AbstractCegarLoop]: Abstraction has 648 states and 799 transitions. [2022-03-18 05:24:01,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 799 transitions. [2022-03-18 05:24:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:24:01,681 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:01,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:24:01,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-18 05:24:01,682 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1405392111, now seen corresponding path program 1 times [2022-03-18 05:24:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2083901340] [2022-03-18 05:24:01,682 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1405392111, now seen corresponding path program 2 times [2022-03-18 05:24:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940111282] [2022-03-18 05:24:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:24:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:24:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:01,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:01,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940111282] [2022-03-18 05:24:01,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940111282] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:01,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:01,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:24:01,961 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2083901340] [2022-03-18 05:24:01,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2083901340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:01,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:01,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:24:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868854075] [2022-03-18 05:24:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:01,961 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 05:24:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 05:24:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:24:01,962 INFO L87 Difference]: Start difference. First operand 648 states and 799 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:24:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:03,710 INFO L93 Difference]: Finished difference Result 736 states and 923 transitions. [2022-03-18 05:24:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:24:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-03-18 05:24:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:03,729 INFO L225 Difference]: With dead ends: 736 [2022-03-18 05:24:03,729 INFO L226 Difference]: Without dead ends: 698 [2022-03-18 05:24:03,730 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:24:03,730 INFO L912 BasicCegarLoop]: 429 mSDtfsCounter, 936 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:03,730 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 2452 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 05:24:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-03-18 05:24:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 643. [2022-03-18 05:24:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 510 states have (on average 1.2431372549019608) internal successors, (634), 525 states have internal predecessors, (634), 68 states have call successors, (68), 48 states have call predecessors, (68), 64 states have return successors, (87), 76 states have call predecessors, (87), 62 states have call successors, (87) [2022-03-18 05:24:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 789 transitions. [2022-03-18 05:24:04,115 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 789 transitions. Word has length 71 [2022-03-18 05:24:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:04,116 INFO L478 AbstractCegarLoop]: Abstraction has 643 states and 789 transitions. [2022-03-18 05:24:04,116 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:24:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 789 transitions. [2022-03-18 05:24:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:24:04,117 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:04,117 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] [2022-03-18 05:24:04,117 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-18 05:24:04,117 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1361964370, now seen corresponding path program 1 times [2022-03-18 05:24:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:04,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [28162766] [2022-03-18 05:24:04,118 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1361964370, now seen corresponding path program 2 times [2022-03-18 05:24:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:04,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145579591] [2022-03-18 05:24:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:24:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:24:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145579591] [2022-03-18 05:24:04,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145579591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:04,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:04,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:04,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [28162766] [2022-03-18 05:24:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [28162766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:04,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425115301] [2022-03-18 05:24:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:04,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:24:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:24:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:24:04,279 INFO L87 Difference]: Start difference. First operand 643 states and 789 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:05,651 INFO L93 Difference]: Finished difference Result 731 states and 903 transitions. [2022-03-18 05:24:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:24:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-18 05:24:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:05,653 INFO L225 Difference]: With dead ends: 731 [2022-03-18 05:24:05,653 INFO L226 Difference]: Without dead ends: 687 [2022-03-18 05:24:05,654 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:24:05,654 INFO L912 BasicCegarLoop]: 408 mSDtfsCounter, 451 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:05,654 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1388 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:24:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-18 05:24:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 637. [2022-03-18 05:24:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 505 states have (on average 1.2435643564356436) internal successors, (628), 520 states have internal predecessors, (628), 67 states have call successors, (67), 48 states have call predecessors, (67), 64 states have return successors, (86), 75 states have call predecessors, (86), 61 states have call successors, (86) [2022-03-18 05:24:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 781 transitions. [2022-03-18 05:24:05,901 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 781 transitions. Word has length 71 [2022-03-18 05:24:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:05,901 INFO L478 AbstractCegarLoop]: Abstraction has 637 states and 781 transitions. [2022-03-18 05:24:05,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 781 transitions. [2022-03-18 05:24:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-18 05:24:05,902 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:05,902 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, 1, 1, 1] [2022-03-18 05:24:05,902 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-18 05:24:05,902 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 696849523, now seen corresponding path program 1 times [2022-03-18 05:24:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:05,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2134288579] [2022-03-18 05:24:05,903 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 696849523, now seen corresponding path program 2 times [2022-03-18 05:24:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:05,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956917944] [2022-03-18 05:24:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:06,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956917944] [2022-03-18 05:24:06,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956917944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:06,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:06,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:24:06,172 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:06,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2134288579] [2022-03-18 05:24:06,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2134288579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:06,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:06,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 05:24:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246558858] [2022-03-18 05:24:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:06,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 05:24:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 05:24:06,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:24:06,173 INFO L87 Difference]: Start difference. First operand 637 states and 781 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:24:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:08,102 INFO L93 Difference]: Finished difference Result 868 states and 1068 transitions. [2022-03-18 05:24:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 05:24:08,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-03-18 05:24:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:08,104 INFO L225 Difference]: With dead ends: 868 [2022-03-18 05:24:08,104 INFO L226 Difference]: Without dead ends: 729 [2022-03-18 05:24:08,105 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:24:08,109 INFO L912 BasicCegarLoop]: 382 mSDtfsCounter, 562 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:08,109 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1931 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-18 05:24:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-03-18 05:24:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 643. [2022-03-18 05:24:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 511 states have (on average 1.2328767123287672) internal successors, (630), 526 states have internal predecessors, (630), 67 states have call successors, (67), 48 states have call predecessors, (67), 64 states have return successors, (86), 75 states have call predecessors, (86), 61 states have call successors, (86) [2022-03-18 05:24:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 783 transitions. [2022-03-18 05:24:08,330 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 783 transitions. Word has length 71 [2022-03-18 05:24:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:08,330 INFO L478 AbstractCegarLoop]: Abstraction has 643 states and 783 transitions. [2022-03-18 05:24:08,330 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:24:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 783 transitions. [2022-03-18 05:24:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 05:24:08,331 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:08,331 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] [2022-03-18 05:24:08,331 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-18 05:24:08,331 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -403390025, now seen corresponding path program 1 times [2022-03-18 05:24:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:08,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [920571440] [2022-03-18 05:24:08,332 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -403390025, now seen corresponding path program 2 times [2022-03-18 05:24:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:08,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429366430] [2022-03-18 05:24:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:24:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429366430] [2022-03-18 05:24:08,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429366430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:08,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:08,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:08,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:08,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [920571440] [2022-03-18 05:24:08,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [920571440] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:08,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:08,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972067343] [2022-03-18 05:24:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:08,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:24:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:24:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:24:08,539 INFO L87 Difference]: Start difference. First operand 643 states and 783 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:09,865 INFO L93 Difference]: Finished difference Result 731 states and 897 transitions. [2022-03-18 05:24:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:24:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-03-18 05:24:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:09,867 INFO L225 Difference]: With dead ends: 731 [2022-03-18 05:24:09,867 INFO L226 Difference]: Without dead ends: 681 [2022-03-18 05:24:09,867 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:24:09,867 INFO L912 BasicCegarLoop]: 399 mSDtfsCounter, 614 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:09,868 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 1229 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:24:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-03-18 05:24:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 631. [2022-03-18 05:24:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 500 states have (on average 1.228) internal successors, (614), 515 states have internal predecessors, (614), 66 states have call successors, (66), 48 states have call predecessors, (66), 64 states have return successors, (85), 74 states have call predecessors, (85), 60 states have call successors, (85) [2022-03-18 05:24:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 765 transitions. [2022-03-18 05:24:10,107 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 765 transitions. Word has length 73 [2022-03-18 05:24:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:10,108 INFO L478 AbstractCegarLoop]: Abstraction has 631 states and 765 transitions. [2022-03-18 05:24:10,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:24:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 765 transitions. [2022-03-18 05:24:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 05:24:10,109 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:10,109 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] [2022-03-18 05:24:10,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-18 05:24:10,109 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1773843285, now seen corresponding path program 1 times [2022-03-18 05:24:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:10,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1842631502] [2022-03-18 05:24:10,110 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1773843285, now seen corresponding path program 2 times [2022-03-18 05:24:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:10,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317370028] [2022-03-18 05:24:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:24:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317370028] [2022-03-18 05:24:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317370028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:24:10,429 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1842631502] [2022-03-18 05:24:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1842631502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-18 05:24:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104234038] [2022-03-18 05:24:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:10,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 05:24:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 05:24:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:24:10,430 INFO L87 Difference]: Start difference. First operand 631 states and 765 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 05:24:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:15,197 INFO L93 Difference]: Finished difference Result 1532 states and 1866 transitions. [2022-03-18 05:24:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-18 05:24:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-18 05:24:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:15,202 INFO L225 Difference]: With dead ends: 1532 [2022-03-18 05:24:15,202 INFO L226 Difference]: Without dead ends: 1385 [2022-03-18 05:24:15,203 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-03-18 05:24:15,204 INFO L912 BasicCegarLoop]: 418 mSDtfsCounter, 3349 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:15,204 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3354 Valid, 1381 Invalid, 4782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 05:24:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2022-03-18 05:24:15,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1006. [2022-03-18 05:24:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 801 states have (on average 1.2459425717852683) internal successors, (998), 826 states have internal predecessors, (998), 101 states have call successors, (101), 79 states have call predecessors, (101), 103 states have return successors, (136), 107 states have call predecessors, (136), 95 states have call successors, (136) [2022-03-18 05:24:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1235 transitions. [2022-03-18 05:24:15,732 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1235 transitions. Word has length 73 [2022-03-18 05:24:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:15,732 INFO L478 AbstractCegarLoop]: Abstraction has 1006 states and 1235 transitions. [2022-03-18 05:24:15,732 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 05:24:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1235 transitions. [2022-03-18 05:24:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 05:24:15,734 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:15,734 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] [2022-03-18 05:24:15,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-18 05:24:15,734 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1094571031, now seen corresponding path program 1 times [2022-03-18 05:24:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:15,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [285527801] [2022-03-18 05:24:15,735 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1094571031, now seen corresponding path program 2 times [2022-03-18 05:24:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:15,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430735953] [2022-03-18 05:24:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 05:24:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:24:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:15,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430735953] [2022-03-18 05:24:15,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430735953] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:15,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:15,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:24:15,920 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:15,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [285527801] [2022-03-18 05:24:15,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [285527801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:15,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:15,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 05:24:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280387394] [2022-03-18 05:24:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:15,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 05:24:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 05:24:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:24:15,921 INFO L87 Difference]: Start difference. First operand 1006 states and 1235 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 05:24:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:18,963 INFO L93 Difference]: Finished difference Result 1405 states and 1720 transitions. [2022-03-18 05:24:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 05:24:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-18 05:24:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:18,966 INFO L225 Difference]: With dead ends: 1405 [2022-03-18 05:24:18,967 INFO L226 Difference]: Without dead ends: 1275 [2022-03-18 05:24:18,967 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:24:18,967 INFO L912 BasicCegarLoop]: 697 mSDtfsCounter, 1989 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:18,968 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 1330 Invalid, 2849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-18 05:24:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-18 05:24:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1099. [2022-03-18 05:24:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 874 states have (on average 1.2356979405034325) internal successors, (1080), 894 states have internal predecessors, (1080), 115 states have call successors, (115), 83 states have call predecessors, (115), 109 states have return successors, (152), 126 states have call predecessors, (152), 109 states have call successors, (152) [2022-03-18 05:24:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1347 transitions. [2022-03-18 05:24:19,702 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1347 transitions. Word has length 73 [2022-03-18 05:24:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:19,702 INFO L478 AbstractCegarLoop]: Abstraction has 1099 states and 1347 transitions. [2022-03-18 05:24:19,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-18 05:24:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1347 transitions. [2022-03-18 05:24:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 05:24:19,704 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:19,704 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] [2022-03-18 05:24:19,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-18 05:24:19,704 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2057821935, now seen corresponding path program 1 times [2022-03-18 05:24:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [956652866] [2022-03-18 05:24:19,704 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2057821935, now seen corresponding path program 2 times [2022-03-18 05:24:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:19,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526700700] [2022-03-18 05:24:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:24:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:24:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526700700] [2022-03-18 05:24:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526700700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:19,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:19,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:24:19,971 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [956652866] [2022-03-18 05:24:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [956652866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:19,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:19,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-18 05:24:19,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301913787] [2022-03-18 05:24:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:19,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 05:24:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 05:24:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:24:19,972 INFO L87 Difference]: Start difference. First operand 1099 states and 1347 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 05:24:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:22,468 INFO L93 Difference]: Finished difference Result 1233 states and 1536 transitions. [2022-03-18 05:24:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 05:24:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-03-18 05:24:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:22,471 INFO L225 Difference]: With dead ends: 1233 [2022-03-18 05:24:22,471 INFO L226 Difference]: Without dead ends: 1191 [2022-03-18 05:24:22,472 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-18 05:24:22,472 INFO L912 BasicCegarLoop]: 397 mSDtfsCounter, 790 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:22,472 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2285 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 05:24:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-18 05:24:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1095. [2022-03-18 05:24:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 870 states have (on average 1.2344827586206897) internal successors, (1074), 890 states have internal predecessors, (1074), 115 states have call successors, (115), 83 states have call predecessors, (115), 109 states have return successors, (152), 126 states have call predecessors, (152), 109 states have call successors, (152) [2022-03-18 05:24:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1341 transitions. [2022-03-18 05:24:22,938 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1341 transitions. Word has length 77 [2022-03-18 05:24:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:22,938 INFO L478 AbstractCegarLoop]: Abstraction has 1095 states and 1341 transitions. [2022-03-18 05:24:22,938 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-18 05:24:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1341 transitions. [2022-03-18 05:24:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-18 05:24:22,940 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:22,940 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] [2022-03-18 05:24:22,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-18 05:24:22,940 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1891319547, now seen corresponding path program 1 times [2022-03-18 05:24:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:22,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [196422344] [2022-03-18 05:24:22,941 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1891319547, now seen corresponding path program 2 times [2022-03-18 05:24:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:22,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911713492] [2022-03-18 05:24:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:24:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 05:24:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911713492] [2022-03-18 05:24:23,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911713492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:23,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:23,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:23,117 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [196422344] [2022-03-18 05:24:23,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [196422344] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:23,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:23,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:24:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149639346] [2022-03-18 05:24:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:23,118 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:24:23,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:23,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:24:23,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:24:23,118 INFO L87 Difference]: Start difference. First operand 1095 states and 1341 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:24:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:24,669 INFO L93 Difference]: Finished difference Result 1230 states and 1517 transitions. [2022-03-18 05:24:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:24:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-03-18 05:24:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:24,673 INFO L225 Difference]: With dead ends: 1230 [2022-03-18 05:24:24,673 INFO L226 Difference]: Without dead ends: 1131 [2022-03-18 05:24:24,673 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:24:24,678 INFO L912 BasicCegarLoop]: 374 mSDtfsCounter, 398 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:24,678 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 958 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:24:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-18 05:24:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1061. [2022-03-18 05:24:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 842 states have (on average 1.2304038004750595) internal successors, (1036), 862 states have internal predecessors, (1036), 109 states have call successors, (109), 83 states have call predecessors, (109), 109 states have return successors, (144), 120 states have call predecessors, (144), 103 states have call successors, (144) [2022-03-18 05:24:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1289 transitions. [2022-03-18 05:24:25,171 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1289 transitions. Word has length 78 [2022-03-18 05:24:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:25,171 INFO L478 AbstractCegarLoop]: Abstraction has 1061 states and 1289 transitions. [2022-03-18 05:24:25,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:24:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1289 transitions. [2022-03-18 05:24:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 05:24:25,173 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:25,173 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] [2022-03-18 05:24:25,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-18 05:24:25,173 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:25,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -888306664, now seen corresponding path program 1 times [2022-03-18 05:24:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:25,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [635653085] [2022-03-18 05:24:25,173 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -888306664, now seen corresponding path program 2 times [2022-03-18 05:24:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:25,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887016410] [2022-03-18 05:24:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:24:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:24:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:24:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:25,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887016410] [2022-03-18 05:24:25,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887016410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:25,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:25,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:24:25,366 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:25,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [635653085] [2022-03-18 05:24:25,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [635653085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:25,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:25,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:24:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347467531] [2022-03-18 05:24:25,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:25,366 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:24:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:24:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:24:25,366 INFO L87 Difference]: Start difference. First operand 1061 states and 1289 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:24:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:26,870 INFO L93 Difference]: Finished difference Result 1156 states and 1411 transitions. [2022-03-18 05:24:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:24:26,870 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 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 75 [2022-03-18 05:24:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:26,872 INFO L225 Difference]: With dead ends: 1156 [2022-03-18 05:24:26,872 INFO L226 Difference]: Without dead ends: 1065 [2022-03-18 05:24:26,873 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:24:26,873 INFO L912 BasicCegarLoop]: 346 mSDtfsCounter, 498 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:26,873 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1422 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:24:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-18 05:24:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1013. [2022-03-18 05:24:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 808 states have (on average 1.2326732673267327) internal successors, (996), 828 states have internal predecessors, (996), 99 states have call successors, (99), 79 states have call predecessors, (99), 105 states have return successors, (132), 110 states have call predecessors, (132), 93 states have call successors, (132) [2022-03-18 05:24:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1227 transitions. [2022-03-18 05:24:27,247 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1227 transitions. Word has length 75 [2022-03-18 05:24:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:27,247 INFO L478 AbstractCegarLoop]: Abstraction has 1013 states and 1227 transitions. [2022-03-18 05:24:27,247 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:24:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1227 transitions. [2022-03-18 05:24:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 05:24:27,249 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:27,249 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] [2022-03-18 05:24:27,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-18 05:24:27,249 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash 384049071, now seen corresponding path program 1 times [2022-03-18 05:24:27,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:27,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2047015207] [2022-03-18 05:24:27,250 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash 384049071, now seen corresponding path program 2 times [2022-03-18 05:24:27,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:27,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826139713] [2022-03-18 05:24:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:24:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:24:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:24:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:24:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:24:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 05:24:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 05:24:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:24:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:24:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:24:27,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826139713] [2022-03-18 05:24:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826139713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:27,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:24:27,433 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:24:27,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2047015207] [2022-03-18 05:24:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2047015207] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:24:27,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:24:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:24:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211514163] [2022-03-18 05:24:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:24:27,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:24:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:24:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:24:27,434 INFO L87 Difference]: Start difference. First operand 1013 states and 1227 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:24:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:24:28,512 INFO L93 Difference]: Finished difference Result 1110 states and 1349 transitions. [2022-03-18 05:24:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:24:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-03-18 05:24:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:24:28,515 INFO L225 Difference]: With dead ends: 1110 [2022-03-18 05:24:28,515 INFO L226 Difference]: Without dead ends: 1049 [2022-03-18 05:24:28,516 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:24:28,516 INFO L912 BasicCegarLoop]: 331 mSDtfsCounter, 579 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:24:28,516 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 1001 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:24:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-03-18 05:24:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 997. [2022-03-18 05:24:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 794 states have (on average 1.2317380352644836) internal successors, (978), 814 states have internal predecessors, (978), 97 states have call successors, (97), 79 states have call predecessors, (97), 105 states have return successors, (128), 108 states have call predecessors, (128), 91 states have call successors, (128) [2022-03-18 05:24:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1203 transitions. [2022-03-18 05:24:28,889 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1203 transitions. Word has length 73 [2022-03-18 05:24:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:24:28,889 INFO L478 AbstractCegarLoop]: Abstraction has 997 states and 1203 transitions. [2022-03-18 05:24:28,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:24:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1203 transitions. [2022-03-18 05:24:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 05:24:28,891 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:24:28,891 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] [2022-03-18 05:24:28,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-18 05:24:28,891 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:24:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:24:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -644807577, now seen corresponding path program 1 times [2022-03-18 05:24:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:24:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1526569731] [2022-03-18 05:24:28,892 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:24:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash -644807577, now seen corresponding path program 2 times [2022-03-18 05:24:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:24:28,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687790970] [2022-03-18 05:24:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:24:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:24:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 05:24:28,901 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 05:24:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 05:24:28,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 05:24:28,935 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-18 05:24:28,935 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 05:24:28,937 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 05:24:28,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-18 05:24:28,940 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-18 05:24:28,942 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 05:24:28,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:24:28 BoogieIcfgContainer [2022-03-18 05:24:28,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 05:24:28,958 INFO L158 Benchmark]: Toolchain (without parser) took 169028.48ms. Allocated memory was 231.7MB in the beginning and 879.8MB in the end (delta: 648.0MB). Free memory was 176.1MB in the beginning and 504.8MB in the end (delta: -328.7MB). Peak memory consumption was 320.5MB. Max. memory is 8.0GB. [2022-03-18 05:24:28,958 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 231.7MB. Free memory is still 194.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 05:24:28,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.23ms. Allocated memory was 231.7MB in the beginning and 290.5MB in the end (delta: 58.7MB). Free memory was 176.0MB in the beginning and 244.0MB in the end (delta: -68.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-18 05:24:28,958 INFO L158 Benchmark]: Boogie Preprocessor took 58.67ms. Allocated memory is still 290.5MB. Free memory was 244.0MB in the beginning and 238.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-18 05:24:28,959 INFO L158 Benchmark]: RCFGBuilder took 1068.55ms. Allocated memory is still 290.5MB. Free memory was 238.8MB in the beginning and 172.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-03-18 05:24:28,959 INFO L158 Benchmark]: TraceAbstraction took 167389.88ms. Allocated memory was 290.5MB in the beginning and 879.8MB in the end (delta: 589.3MB). Free memory was 172.2MB in the beginning and 504.8MB in the end (delta: -332.6MB). Peak memory consumption was 257.7MB. Max. memory is 8.0GB. [2022-03-18 05:24:28,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 231.7MB. Free memory is still 194.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 503.23ms. Allocated memory was 231.7MB in the beginning and 290.5MB in the end (delta: 58.7MB). Free memory was 176.0MB in the beginning and 244.0MB in the end (delta: -68.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.67ms. Allocated memory is still 290.5MB. Free memory was 244.0MB in the beginning and 238.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1068.55ms. Allocated memory is still 290.5MB. Free memory was 238.8MB in the beginning and 172.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * TraceAbstraction took 167389.88ms. Allocated memory was 290.5MB in the beginning and 879.8MB in the end (delta: 589.3MB). Free memory was 172.2MB in the beginning and 504.8MB in the end (delta: -332.6MB). Peak memory consumption was 257.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; [L317] COND FALSE !(deviceExtension__Active == 2) [L320] COND FALSE !(deviceExtension__Active == 3) [L323] COND FALSE !(deviceExtension__Active == 1) [L326] COND TRUE deviceExtension__Active == 7 [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 [L1610] COND FALSE !(s != NP) [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 [L1625] irpSp__Control = 224 [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; [L1907] COND TRUE \read(compRegistered) [L1908] COND TRUE routine == 0 [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) [L1574] COND TRUE pended == 0 [L1575] pended = 1 [L1582] COND FALSE !(myStatus >= 0) [L1587] return (myStatus); [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus [L1921] COND FALSE !(__cil_tmp8 == -1073741802) [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 [L1944] returnVal2 = 0 [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 [L1981] return (returnVal2); [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) [L1825] COND TRUE pended == 1 [L1826] COND FALSE !(s == NP) [L1833] COND TRUE pended == 1 [L1834] COND FALSE !(s == MPR3) [L1841] COND TRUE s != UNLOADED [L1842] COND TRUE status != -1 [L1843] COND TRUE s != SKIP2 [L1844] COND FALSE !(s != IPC) [L1857] COND FALSE !(pended != 1) [L1869] COND TRUE status != 259 [L1871] CALL errorFn() [L59] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 520 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 167.3s, OverallIterations: 70, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 134.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76299 SdHoareTripleChecker+Valid, 98.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75886 mSDsluCounter, 118961 SdHoareTripleChecker+Invalid, 83.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78995 mSDsCounter, 26410 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183609 IncrementalHoareTripleChecker+Invalid, 210019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26410 mSolverCounterUnsat, 39966 mSDtfsCounter, 183609 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1975 GetRequests, 825 SyntacticMatches, 18 SemanticMatches, 1132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1099occurred in iteration=65, InterpolantAutomatonStates: 922, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.4s AutomataMinimizationTime, 69 MinimizatonAttempts, 8291 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-18 05:24:28,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...