/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:13:17,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:13:17,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:13:17,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:13:17,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:13:17,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:13:17,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:13:17,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:13:17,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:13:17,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:13:17,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:13:17,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:13:17,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:13:17,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:13:17,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:13:17,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:13:17,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:13:17,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:13:17,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:13:17,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:13:17,610 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:13:17,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:13:17,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:13:17,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:13:17,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:13:17,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:13:17,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:13:17,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:13:17,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:13:17,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 17:13:17,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:13:17,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:13:17,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:13:17,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 17:13:17,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:13:17,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 17:13:17,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:13:17,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:13:17,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:13:17,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:13:17,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 17:13:17,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:13:17,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:13:17,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:13:17,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:13:17,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:13:17,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:13:17,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:13:17,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:13:17,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:13:17,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:13:17,650 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:13:17,650 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:13:17,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:13:17,650 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 17:13:17,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:13:17,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:13:17,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:13:17,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:13:17,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:13:17,854 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:13:17,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-20 17:13:17,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c5851c/083c9b63b7894b44917aae48501499fe/FLAG1622abe33 [2022-03-20 17:13:18,351 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:13:18,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-20 17:13:18,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c5851c/083c9b63b7894b44917aae48501499fe/FLAG1622abe33 [2022-03-20 17:13:18,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c5851c/083c9b63b7894b44917aae48501499fe [2022-03-20 17:13:18,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:13:18,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:13:18,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:13:18,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:13:18,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:13:18,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462ea9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18, skipping insertion in model container [2022-03-20 17:13:18,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:13:18,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:13:18,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2022-03-20 17:13:18,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:13:18,643 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:13:18,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2022-03-20 17:13:18,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:13:18,742 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:13:18,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18 WrapperNode [2022-03-20 17:13:18,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:13:18,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:13:18,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:13:18,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:13:18,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:13:18,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:13:18,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:13:18,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:13:18,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (1/1) ... [2022-03-20 17:13:18,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:13:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:13:18,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:13:18,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:13:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:13:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:13:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:13:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 17:13:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 17:13:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-20 17:13:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-20 17:13:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-20 17:13:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-20 17:13:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-20 17:13:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-20 17:13:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-20 17:13:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 17:13:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:13:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:13:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 17:13:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 17:13:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-20 17:13:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 17:13:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:13:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:13:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:13:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:13:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:13:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:13:19,112 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:13:19,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:13:19,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,160 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,160 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,166 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,181 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 17:13:19,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 17:13:19,299 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-03-20 17:13:19,338 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-03-20 17:13:19,344 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,355 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 17:13:19,355 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 17:13:19,407 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,413 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,413 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,418 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,418 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,424 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,424 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,450 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,469 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 17:13:19,469 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 17:13:19,489 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,493 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,493 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,498 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:13:19,501 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:13:19,502 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:13:19,510 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:13:19,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:13:19,519 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 17:13:19,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:13:19 BoogieIcfgContainer [2022-03-20 17:13:19,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:13:19,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:13:19,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:13:19,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:13:19,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:13:18" (1/3) ... [2022-03-20 17:13:19,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a92461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:13:19, skipping insertion in model container [2022-03-20 17:13:19,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:13:18" (2/3) ... [2022-03-20 17:13:19,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a92461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:13:19, skipping insertion in model container [2022-03-20 17:13:19,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:13:19" (3/3) ... [2022-03-20 17:13:19,527 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2022-03-20 17:13:19,531 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:13:19,531 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:13:19,565 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:13:19,570 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 [2022-03-20 17:13:19,570 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:13:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-20 17:13:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 17:13:19,594 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:19,595 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:19,595 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 1 times [2022-03-20 17:13:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:19,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1091908408] [2022-03-20 17:13:19,613 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 2 times [2022-03-20 17:13:19,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:19,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163942563] [2022-03-20 17:13:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:19,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163942563] [2022-03-20 17:13:20,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163942563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:20,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:20,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:13:20,105 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1091908408] [2022-03-20 17:13:20,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1091908408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:20,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:20,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:13:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294470504] [2022-03-20 17:13:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:20,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:13:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:13:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:13:20,146 INFO L87 Difference]: Start difference. First operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:13:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:21,280 INFO L93 Difference]: Finished difference Result 539 states and 782 transitions. [2022-03-20 17:13:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:13:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-20 17:13:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:21,304 INFO L225 Difference]: With dead ends: 539 [2022-03-20 17:13:21,304 INFO L226 Difference]: Without dead ends: 324 [2022-03-20 17:13:21,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:13:21,315 INFO L913 BasicCegarLoop]: 366 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:21,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 575 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 17:13:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-20 17:13:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2022-03-20 17:13:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 214 states have (on average 1.3738317757009346) internal successors, (294), 235 states have internal predecessors, (294), 57 states have call successors, (57), 24 states have call predecessors, (57), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-20 17:13:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2022-03-20 17:13:21,405 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2022-03-20 17:13:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:21,405 INFO L478 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2022-03-20 17:13:21,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:13:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2022-03-20 17:13:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 17:13:21,407 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:21,407 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:21,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:13:21,407 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 1 times [2022-03-20 17:13:21,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:21,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [912994152] [2022-03-20 17:13:21,409 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 2 times [2022-03-20 17:13:21,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:21,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715664246] [2022-03-20 17:13:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:21,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715664246] [2022-03-20 17:13:21,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715664246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:21,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:21,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:21,598 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:21,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [912994152] [2022-03-20 17:13:21,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [912994152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:21,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:21,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941835917] [2022-03-20 17:13:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:21,600 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:13:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:13:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:13:21,601 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:22,773 INFO L93 Difference]: Finished difference Result 643 states and 865 transitions. [2022-03-20 17:13:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:13:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-20 17:13:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:22,778 INFO L225 Difference]: With dead ends: 643 [2022-03-20 17:13:22,778 INFO L226 Difference]: Without dead ends: 480 [2022-03-20 17:13:22,779 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:22,780 INFO L913 BasicCegarLoop]: 510 mSDtfsCounter, 552 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:22,780 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 753 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 17:13:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-20 17:13:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 431. [2022-03-20 17:13:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 329 states have (on average 1.3161094224924013) internal successors, (433), 336 states have internal predecessors, (433), 66 states have call successors, (66), 37 states have call predecessors, (66), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2022-03-20 17:13:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2022-03-20 17:13:22,832 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 28 [2022-03-20 17:13:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:22,833 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2022-03-20 17:13:22,833 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2022-03-20 17:13:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-20 17:13:22,834 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:22,834 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:22,834 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:13:22,834 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 1 times [2022-03-20 17:13:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:22,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1566617656] [2022-03-20 17:13:22,836 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 2 times [2022-03-20 17:13:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050212101] [2022-03-20 17:13:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050212101] [2022-03-20 17:13:23,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050212101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:23,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:23,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:23,022 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:23,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1566617656] [2022-03-20 17:13:23,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1566617656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:23,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:23,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203672137] [2022-03-20 17:13:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:23,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:13:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:13:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:13:23,024 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:24,139 INFO L93 Difference]: Finished difference Result 949 states and 1266 transitions. [2022-03-20 17:13:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:13:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-20 17:13:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:24,143 INFO L225 Difference]: With dead ends: 949 [2022-03-20 17:13:24,143 INFO L226 Difference]: Without dead ends: 679 [2022-03-20 17:13:24,144 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:24,145 INFO L913 BasicCegarLoop]: 352 mSDtfsCounter, 475 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:24,146 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 568 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-03-20 17:13:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 634. [2022-03-20 17:13:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 494 states have (on average 1.3157894736842106) internal successors, (650), 499 states have internal predecessors, (650), 86 states have call successors, (86), 55 states have call predecessors, (86), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2022-03-20 17:13:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 848 transitions. [2022-03-20 17:13:24,205 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 848 transitions. Word has length 30 [2022-03-20 17:13:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:24,205 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 848 transitions. [2022-03-20 17:13:24,206 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 848 transitions. [2022-03-20 17:13:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-20 17:13:24,207 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:24,207 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:24,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:13:24,207 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 1 times [2022-03-20 17:13:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:24,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [259894291] [2022-03-20 17:13:24,208 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 2 times [2022-03-20 17:13:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:24,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146197380] [2022-03-20 17:13:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146197380] [2022-03-20 17:13:24,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146197380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:24,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:24,342 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [259894291] [2022-03-20 17:13:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [259894291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726706662] [2022-03-20 17:13:24,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:24,343 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:13:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:13:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:13:24,344 INFO L87 Difference]: Start difference. First operand 634 states and 848 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:25,352 INFO L93 Difference]: Finished difference Result 743 states and 986 transitions. [2022-03-20 17:13:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:13:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-03-20 17:13:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:25,357 INFO L225 Difference]: With dead ends: 743 [2022-03-20 17:13:25,357 INFO L226 Difference]: Without dead ends: 723 [2022-03-20 17:13:25,358 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:25,358 INFO L913 BasicCegarLoop]: 328 mSDtfsCounter, 474 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:25,359 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 451 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-03-20 17:13:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2022-03-20 17:13:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 532 states have (on average 1.3195488721804511) internal successors, (702), 543 states have internal predecessors, (702), 87 states have call successors, (87), 57 states have call predecessors, (87), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2022-03-20 17:13:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 906 transitions. [2022-03-20 17:13:25,420 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 906 transitions. Word has length 34 [2022-03-20 17:13:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:25,421 INFO L478 AbstractCegarLoop]: Abstraction has 678 states and 906 transitions. [2022-03-20 17:13:25,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 906 transitions. [2022-03-20 17:13:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 17:13:25,423 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:25,423 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:25,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 17:13:25,423 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 1 times [2022-03-20 17:13:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [606659602] [2022-03-20 17:13:25,424 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 2 times [2022-03-20 17:13:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:25,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908940891] [2022-03-20 17:13:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:13:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:25,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908940891] [2022-03-20 17:13:25,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908940891] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:25,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:25,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:13:25,621 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [606659602] [2022-03-20 17:13:25,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [606659602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:25,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:25,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:13:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990436669] [2022-03-20 17:13:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:25,622 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:13:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:13:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:13:25,623 INFO L87 Difference]: Start difference. First operand 678 states and 906 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 17:13:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:26,738 INFO L93 Difference]: Finished difference Result 771 states and 1021 transitions. [2022-03-20 17:13:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:13:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-03-20 17:13:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:26,743 INFO L225 Difference]: With dead ends: 771 [2022-03-20 17:13:26,743 INFO L226 Difference]: Without dead ends: 704 [2022-03-20 17:13:26,743 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:26,744 INFO L913 BasicCegarLoop]: 324 mSDtfsCounter, 384 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:26,744 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 751 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 17:13:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-03-20 17:13:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2022-03-20 17:13:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 535 states have (on average 1.3177570093457944) internal successors, (705), 546 states have internal predecessors, (705), 87 states have call successors, (87), 57 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-03-20 17:13:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 910 transitions. [2022-03-20 17:13:26,817 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 910 transitions. Word has length 41 [2022-03-20 17:13:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:26,817 INFO L478 AbstractCegarLoop]: Abstraction has 682 states and 910 transitions. [2022-03-20 17:13:26,817 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 17:13:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 910 transitions. [2022-03-20 17:13:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 17:13:26,818 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:26,819 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:26,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 17:13:26,819 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 1 times [2022-03-20 17:13:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:26,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [300114569] [2022-03-20 17:13:26,820 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 2 times [2022-03-20 17:13:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:26,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837768783] [2022-03-20 17:13:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:26,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:26,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837768783] [2022-03-20 17:13:26,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837768783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:26,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:26,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:26,941 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:26,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [300114569] [2022-03-20 17:13:26,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [300114569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:26,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:26,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:13:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137491359] [2022-03-20 17:13:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:26,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:13:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:13:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:13:26,943 INFO L87 Difference]: Start difference. First operand 682 states and 910 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:27,913 INFO L93 Difference]: Finished difference Result 709 states and 944 transitions. [2022-03-20 17:13:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:13:27,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-20 17:13:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:27,918 INFO L225 Difference]: With dead ends: 709 [2022-03-20 17:13:27,918 INFO L226 Difference]: Without dead ends: 706 [2022-03-20 17:13:27,918 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 17:13:27,920 INFO L913 BasicCegarLoop]: 345 mSDtfsCounter, 167 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:27,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 579 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-20 17:13:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 693. [2022-03-20 17:13:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 546 states have (on average 1.3168498168498168) internal successors, (719), 556 states have internal predecessors, (719), 87 states have call successors, (87), 58 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-03-20 17:13:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 924 transitions. [2022-03-20 17:13:27,983 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 924 transitions. Word has length 40 [2022-03-20 17:13:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:27,983 INFO L478 AbstractCegarLoop]: Abstraction has 693 states and 924 transitions. [2022-03-20 17:13:27,983 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 17:13:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 924 transitions. [2022-03-20 17:13:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 17:13:27,984 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:27,985 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:27,985 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 17:13:27,985 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 1 times [2022-03-20 17:13:27,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:27,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1965538423] [2022-03-20 17:13:27,986 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 2 times [2022-03-20 17:13:27,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:27,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151239834] [2022-03-20 17:13:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:13:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:28,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151239834] [2022-03-20 17:13:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151239834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:28,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:28,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:28,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1965538423] [2022-03-20 17:13:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1965538423] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:28,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:28,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309350019] [2022-03-20 17:13:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:28,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:13:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:13:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:28,162 INFO L87 Difference]: Start difference. First operand 693 states and 924 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:28,910 INFO L93 Difference]: Finished difference Result 768 states and 1018 transitions. [2022-03-20 17:13:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:13:28,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-03-20 17:13:28,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:28,914 INFO L225 Difference]: With dead ends: 768 [2022-03-20 17:13:28,914 INFO L226 Difference]: Without dead ends: 763 [2022-03-20 17:13:28,915 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:13:28,915 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 425 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:28,915 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 673 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-20 17:13:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-20 17:13:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.31433506044905) internal successors, (761), 592 states have internal predecessors, (761), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-20 17:13:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 972 transitions. [2022-03-20 17:13:28,980 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 972 transitions. Word has length 41 [2022-03-20 17:13:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:28,980 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 972 transitions. [2022-03-20 17:13:28,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 972 transitions. [2022-03-20 17:13:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 17:13:28,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:28,981 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:28,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 17:13:28,981 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 1 times [2022-03-20 17:13:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:28,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2102467998] [2022-03-20 17:13:28,982 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 2 times [2022-03-20 17:13:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780017242] [2022-03-20 17:13:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:13:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:29,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:29,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780017242] [2022-03-20 17:13:29,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780017242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:29,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:29,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:29,245 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:29,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2102467998] [2022-03-20 17:13:29,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2102467998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:29,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:29,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359272334] [2022-03-20 17:13:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:29,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:29,247 INFO L87 Difference]: Start difference. First operand 732 states and 972 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:30,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:30,458 INFO L93 Difference]: Finished difference Result 772 states and 1020 transitions. [2022-03-20 17:13:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:13:30,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-03-20 17:13:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:30,462 INFO L225 Difference]: With dead ends: 772 [2022-03-20 17:13:30,462 INFO L226 Difference]: Without dead ends: 763 [2022-03-20 17:13:30,462 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:13:30,463 INFO L913 BasicCegarLoop]: 316 mSDtfsCounter, 765 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:30,463 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 839 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-20 17:13:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-20 17:13:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.310880829015544) internal successors, (759), 592 states have internal predecessors, (759), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-20 17:13:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 970 transitions. [2022-03-20 17:13:30,562 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 970 transitions. Word has length 42 [2022-03-20 17:13:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:30,562 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 970 transitions. [2022-03-20 17:13:30,562 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 970 transitions. [2022-03-20 17:13:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 17:13:30,563 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:30,563 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:30,563 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 17:13:30,564 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 1 times [2022-03-20 17:13:30,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:30,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [796391176] [2022-03-20 17:13:30,564 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 2 times [2022-03-20 17:13:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:30,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915227] [2022-03-20 17:13:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:13:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:30,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915227] [2022-03-20 17:13:30,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:30,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:30,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:30,767 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:30,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [796391176] [2022-03-20 17:13:30,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [796391176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:30,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:30,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792249028] [2022-03-20 17:13:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:30,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:30,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:30,769 INFO L87 Difference]: Start difference. First operand 732 states and 970 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:31,859 INFO L93 Difference]: Finished difference Result 772 states and 1018 transitions. [2022-03-20 17:13:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:13:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-03-20 17:13:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:31,866 INFO L225 Difference]: With dead ends: 772 [2022-03-20 17:13:31,866 INFO L226 Difference]: Without dead ends: 763 [2022-03-20 17:13:31,866 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:13:31,869 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 884 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:31,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 733 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:13:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-20 17:13:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-20 17:13:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.307426597582038) internal successors, (757), 592 states have internal predecessors, (757), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-20 17:13:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 968 transitions. [2022-03-20 17:13:31,958 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 968 transitions. Word has length 43 [2022-03-20 17:13:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:31,958 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 968 transitions. [2022-03-20 17:13:31,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 968 transitions. [2022-03-20 17:13:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 17:13:31,960 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:31,960 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:31,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 17:13:31,960 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 1 times [2022-03-20 17:13:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:31,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1125633456] [2022-03-20 17:13:31,963 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 2 times [2022-03-20 17:13:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088520218] [2022-03-20 17:13:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:13:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:32,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:32,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088520218] [2022-03-20 17:13:32,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088520218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:32,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:32,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 17:13:32,136 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:32,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1125633456] [2022-03-20 17:13:32,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1125633456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:32,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:32,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 17:13:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015125627] [2022-03-20 17:13:32,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:32,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 17:13:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 17:13:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-20 17:13:32,138 INFO L87 Difference]: Start difference. First operand 732 states and 968 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 17:13:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:33,266 INFO L93 Difference]: Finished difference Result 1109 states and 1486 transitions. [2022-03-20 17:13:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:13:33,266 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), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-03-20 17:13:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:33,271 INFO L225 Difference]: With dead ends: 1109 [2022-03-20 17:13:33,271 INFO L226 Difference]: Without dead ends: 1106 [2022-03-20 17:13:33,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:33,274 INFO L913 BasicCegarLoop]: 440 mSDtfsCounter, 520 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:33,275 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 663 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-03-20 17:13:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 845. [2022-03-20 17:13:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 670 states have (on average 1.3149253731343284) internal successors, (881), 685 states have internal predecessors, (881), 97 states have call successors, (97), 68 states have call predecessors, (97), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2022-03-20 17:13:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1122 transitions. [2022-03-20 17:13:33,395 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1122 transitions. Word has length 44 [2022-03-20 17:13:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:33,395 INFO L478 AbstractCegarLoop]: Abstraction has 845 states and 1122 transitions. [2022-03-20 17:13:33,395 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), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 17:13:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1122 transitions. [2022-03-20 17:13:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 17:13:33,397 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:33,397 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:33,397 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 17:13:33,397 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 1 times [2022-03-20 17:13:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1899154487] [2022-03-20 17:13:33,398 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 2 times [2022-03-20 17:13:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896886906] [2022-03-20 17:13:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:13:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896886906] [2022-03-20 17:13:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896886906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:33,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:33,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:33,575 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1899154487] [2022-03-20 17:13:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1899154487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:33,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:33,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776420983] [2022-03-20 17:13:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:33,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:13:33,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:13:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:33,577 INFO L87 Difference]: Start difference. First operand 845 states and 1122 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:34,539 INFO L93 Difference]: Finished difference Result 888 states and 1173 transitions. [2022-03-20 17:13:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:13:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2022-03-20 17:13:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:34,543 INFO L225 Difference]: With dead ends: 888 [2022-03-20 17:13:34,543 INFO L226 Difference]: Without dead ends: 870 [2022-03-20 17:13:34,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:34,544 INFO L913 BasicCegarLoop]: 343 mSDtfsCounter, 340 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:34,544 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1090 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-03-20 17:13:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 843. [2022-03-20 17:13:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 669 states have (on average 1.3139013452914798) internal successors, (879), 684 states have internal predecessors, (879), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-03-20 17:13:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1118 transitions. [2022-03-20 17:13:34,653 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1118 transitions. Word has length 44 [2022-03-20 17:13:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:34,654 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1118 transitions. [2022-03-20 17:13:34,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1118 transitions. [2022-03-20 17:13:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 17:13:34,655 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:34,655 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:34,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 17:13:34,655 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 1 times [2022-03-20 17:13:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1457040958] [2022-03-20 17:13:34,656 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 2 times [2022-03-20 17:13:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806024937] [2022-03-20 17:13:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:34,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:13:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:34,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806024937] [2022-03-20 17:13:34,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806024937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:34,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:34,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:34,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1457040958] [2022-03-20 17:13:34,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1457040958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:34,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:34,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983191328] [2022-03-20 17:13:34,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:34,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:13:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:13:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:34,875 INFO L87 Difference]: Start difference. First operand 843 states and 1118 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 17:13:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:36,600 INFO L93 Difference]: Finished difference Result 1459 states and 1911 transitions. [2022-03-20 17:13:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:13:36,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-03-20 17:13:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:36,605 INFO L225 Difference]: With dead ends: 1459 [2022-03-20 17:13:36,605 INFO L226 Difference]: Without dead ends: 897 [2022-03-20 17:13:36,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:13:36,607 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 1120 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:36,607 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 715 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 17:13:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-20 17:13:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 834. [2022-03-20 17:13:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3) internal successors, (858), 675 states have internal predecessors, (858), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-03-20 17:13:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1097 transitions. [2022-03-20 17:13:36,740 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1097 transitions. Word has length 45 [2022-03-20 17:13:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:36,741 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1097 transitions. [2022-03-20 17:13:36,741 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 17:13:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1097 transitions. [2022-03-20 17:13:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 17:13:36,742 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:36,742 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:36,743 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 17:13:36,743 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 1 times [2022-03-20 17:13:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1623364759] [2022-03-20 17:13:36,744 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 2 times [2022-03-20 17:13:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:36,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332880869] [2022-03-20 17:13:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:13:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:36,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332880869] [2022-03-20 17:13:36,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332880869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:36,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:36,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:36,887 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1623364759] [2022-03-20 17:13:36,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1623364759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:36,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:36,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951208802] [2022-03-20 17:13:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:36,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:13:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:13:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:36,888 INFO L87 Difference]: Start difference. First operand 834 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 17:13:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:37,713 INFO L93 Difference]: Finished difference Result 933 states and 1198 transitions. [2022-03-20 17:13:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:13:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-03-20 17:13:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:37,717 INFO L225 Difference]: With dead ends: 933 [2022-03-20 17:13:37,717 INFO L226 Difference]: Without dead ends: 594 [2022-03-20 17:13:37,718 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:13:37,718 INFO L913 BasicCegarLoop]: 383 mSDtfsCounter, 688 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:37,719 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 755 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-20 17:13:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 542. [2022-03-20 17:13:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.2773892773892774) internal successors, (548), 441 states have internal predecessors, (548), 63 states have call successors, (63), 43 states have call predecessors, (63), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2022-03-20 17:13:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 686 transitions. [2022-03-20 17:13:37,804 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 686 transitions. Word has length 49 [2022-03-20 17:13:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:37,804 INFO L478 AbstractCegarLoop]: Abstraction has 542 states and 686 transitions. [2022-03-20 17:13:37,804 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 17:13:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 686 transitions. [2022-03-20 17:13:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 17:13:37,805 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:37,805 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:37,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 17:13:37,806 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 1 times [2022-03-20 17:13:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:37,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [63538278] [2022-03-20 17:13:37,806 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 2 times [2022-03-20 17:13:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:37,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527461438] [2022-03-20 17:13:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:13:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:13:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 17:13:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:37,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527461438] [2022-03-20 17:13:37,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527461438] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:37,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:37,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:37,962 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:37,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [63538278] [2022-03-20 17:13:37,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [63538278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:37,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:37,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938574516] [2022-03-20 17:13:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:37,962 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:13:37,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:13:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:37,963 INFO L87 Difference]: Start difference. First operand 542 states and 686 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:13:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:38,699 INFO L93 Difference]: Finished difference Result 848 states and 1081 transitions. [2022-03-20 17:13:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:13:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-20 17:13:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:38,702 INFO L225 Difference]: With dead ends: 848 [2022-03-20 17:13:38,703 INFO L226 Difference]: Without dead ends: 583 [2022-03-20 17:13:38,704 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:38,704 INFO L913 BasicCegarLoop]: 336 mSDtfsCounter, 568 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:38,704 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 724 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-20 17:13:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 556. [2022-03-20 17:13:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 442 states have (on average 1.2782805429864252) internal successors, (565), 454 states have internal predecessors, (565), 63 states have call successors, (63), 43 states have call predecessors, (63), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2022-03-20 17:13:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 706 transitions. [2022-03-20 17:13:38,802 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 706 transitions. Word has length 55 [2022-03-20 17:13:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:38,802 INFO L478 AbstractCegarLoop]: Abstraction has 556 states and 706 transitions. [2022-03-20 17:13:38,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:13:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 706 transitions. [2022-03-20 17:13:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 17:13:38,803 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:38,803 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:38,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 17:13:38,804 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 1 times [2022-03-20 17:13:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:38,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [974948738] [2022-03-20 17:13:38,804 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 2 times [2022-03-20 17:13:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:38,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261960190] [2022-03-20 17:13:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261960190] [2022-03-20 17:13:38,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261960190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:38,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:38,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:38,985 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:38,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [974948738] [2022-03-20 17:13:38,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [974948738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:38,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:38,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471239867] [2022-03-20 17:13:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:38,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:38,986 INFO L87 Difference]: Start difference. First operand 556 states and 706 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 17:13:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:40,405 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2022-03-20 17:13:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 17:13:40,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-03-20 17:13:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:40,408 INFO L225 Difference]: With dead ends: 803 [2022-03-20 17:13:40,408 INFO L226 Difference]: Without dead ends: 728 [2022-03-20 17:13:40,409 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-03-20 17:13:40,409 INFO L913 BasicCegarLoop]: 436 mSDtfsCounter, 867 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:40,409 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1222 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 17:13:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-20 17:13:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 585. [2022-03-20 17:13:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 465 states have (on average 1.270967741935484) internal successors, (591), 478 states have internal predecessors, (591), 65 states have call successors, (65), 44 states have call predecessors, (65), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2022-03-20 17:13:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 739 transitions. [2022-03-20 17:13:40,518 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 739 transitions. Word has length 52 [2022-03-20 17:13:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:40,519 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 739 transitions. [2022-03-20 17:13:40,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 17:13:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 739 transitions. [2022-03-20 17:13:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 17:13:40,520 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:40,520 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:40,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 17:13:40,521 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 1 times [2022-03-20 17:13:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:40,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [257395811] [2022-03-20 17:13:40,522 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 2 times [2022-03-20 17:13:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580212606] [2022-03-20 17:13:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:40,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:40,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580212606] [2022-03-20 17:13:40,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580212606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:40,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:40,689 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [257395811] [2022-03-20 17:13:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [257395811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:40,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:13:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321622083] [2022-03-20 17:13:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:40,690 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:13:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:13:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:13:40,690 INFO L87 Difference]: Start difference. First operand 585 states and 739 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:41,501 INFO L93 Difference]: Finished difference Result 772 states and 979 transitions. [2022-03-20 17:13:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:13:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-20 17:13:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:41,504 INFO L225 Difference]: With dead ends: 772 [2022-03-20 17:13:41,504 INFO L226 Difference]: Without dead ends: 753 [2022-03-20 17:13:41,505 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:13:41,505 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 507 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:41,506 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 803 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-03-20 17:13:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 660. [2022-03-20 17:13:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.2665406427221173) internal successors, (670), 538 states have internal predecessors, (670), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-03-20 17:13:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 836 transitions. [2022-03-20 17:13:41,615 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 836 transitions. Word has length 54 [2022-03-20 17:13:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:41,615 INFO L478 AbstractCegarLoop]: Abstraction has 660 states and 836 transitions. [2022-03-20 17:13:41,616 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 836 transitions. [2022-03-20 17:13:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 17:13:41,617 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:41,617 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:41,617 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 17:13:41,617 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 1 times [2022-03-20 17:13:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:41,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1165001172] [2022-03-20 17:13:41,618 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 2 times [2022-03-20 17:13:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:41,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360303657] [2022-03-20 17:13:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:41,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360303657] [2022-03-20 17:13:41,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360303657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:41,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:41,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:41,792 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1165001172] [2022-03-20 17:13:41,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1165001172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:41,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:41,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358063001] [2022-03-20 17:13:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:41,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:13:41,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:13:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:41,794 INFO L87 Difference]: Start difference. First operand 660 states and 836 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:42,912 INFO L93 Difference]: Finished difference Result 1126 states and 1459 transitions. [2022-03-20 17:13:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:13:42,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-03-20 17:13:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:42,916 INFO L225 Difference]: With dead ends: 1126 [2022-03-20 17:13:42,916 INFO L226 Difference]: Without dead ends: 730 [2022-03-20 17:13:42,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:13:42,917 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 555 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:42,918 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 698 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-20 17:13:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 672. [2022-03-20 17:13:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 541 states have (on average 1.2698706099815158) internal successors, (687), 550 states have internal predecessors, (687), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-03-20 17:13:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 853 transitions. [2022-03-20 17:13:43,050 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 853 transitions. Word has length 54 [2022-03-20 17:13:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:43,051 INFO L478 AbstractCegarLoop]: Abstraction has 672 states and 853 transitions. [2022-03-20 17:13:43,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 853 transitions. [2022-03-20 17:13:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 17:13:43,052 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:43,052 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:43,052 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 17:13:43,052 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 1 times [2022-03-20 17:13:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1308007012] [2022-03-20 17:13:43,053 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 2 times [2022-03-20 17:13:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283367272] [2022-03-20 17:13:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:43,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283367272] [2022-03-20 17:13:43,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283367272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:43,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:43,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:43,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:43,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1308007012] [2022-03-20 17:13:43,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1308007012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:43,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:43,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076354537] [2022-03-20 17:13:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:43,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:13:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:13:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:13:43,278 INFO L87 Difference]: Start difference. First operand 672 states and 853 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 17:13:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:44,311 INFO L93 Difference]: Finished difference Result 723 states and 913 transitions. [2022-03-20 17:13:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:13:44,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2022-03-20 17:13:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:44,313 INFO L225 Difference]: With dead ends: 723 [2022-03-20 17:13:44,313 INFO L226 Difference]: Without dead ends: 633 [2022-03-20 17:13:44,314 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:13:44,314 INFO L913 BasicCegarLoop]: 325 mSDtfsCounter, 868 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:44,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 876 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-20 17:13:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 592. [2022-03-20 17:13:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 472 states have (on average 1.2648305084745763) internal successors, (597), 485 states have internal predecessors, (597), 65 states have call successors, (65), 45 states have call predecessors, (65), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2022-03-20 17:13:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 747 transitions. [2022-03-20 17:13:44,441 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 747 transitions. Word has length 54 [2022-03-20 17:13:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:44,441 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 747 transitions. [2022-03-20 17:13:44,441 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 17:13:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 747 transitions. [2022-03-20 17:13:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:13:44,443 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:44,443 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:44,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 17:13:44,443 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 1 times [2022-03-20 17:13:44,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [277283985] [2022-03-20 17:13:44,444 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 2 times [2022-03-20 17:13:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:44,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927480406] [2022-03-20 17:13:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:13:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:13:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:13:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:44,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:44,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927480406] [2022-03-20 17:13:44,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927480406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:44,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:44,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:44,655 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [277283985] [2022-03-20 17:13:44,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [277283985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:44,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:44,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190967778] [2022-03-20 17:13:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:44,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:13:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:13:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:44,657 INFO L87 Difference]: Start difference. First operand 592 states and 747 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:13:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:45,614 INFO L93 Difference]: Finished difference Result 889 states and 1132 transitions. [2022-03-20 17:13:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:13:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-03-20 17:13:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:45,617 INFO L225 Difference]: With dead ends: 889 [2022-03-20 17:13:45,617 INFO L226 Difference]: Without dead ends: 556 [2022-03-20 17:13:45,618 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:45,619 INFO L913 BasicCegarLoop]: 338 mSDtfsCounter, 288 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:45,619 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1157 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-20 17:13:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 518. [2022-03-20 17:13:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 409 states have (on average 1.2469437652811737) internal successors, (510), 418 states have internal predecessors, (510), 61 states have call successors, (61), 43 states have call predecessors, (61), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2022-03-20 17:13:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 641 transitions. [2022-03-20 17:13:45,737 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 641 transitions. Word has length 61 [2022-03-20 17:13:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:45,738 INFO L478 AbstractCegarLoop]: Abstraction has 518 states and 641 transitions. [2022-03-20 17:13:45,738 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:13:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 641 transitions. [2022-03-20 17:13:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 17:13:45,739 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:45,739 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:45,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 17:13:45,739 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 1 times [2022-03-20 17:13:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1140028389] [2022-03-20 17:13:45,740 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 2 times [2022-03-20 17:13:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021702944] [2022-03-20 17:13:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:45,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:45,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021702944] [2022-03-20 17:13:45,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021702944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:45,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:45,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:45,999 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1140028389] [2022-03-20 17:13:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1140028389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:45,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385213094] [2022-03-20 17:13:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:46,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:13:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:13:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:13:46,000 INFO L87 Difference]: Start difference. First operand 518 states and 641 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:47,090 INFO L93 Difference]: Finished difference Result 583 states and 725 transitions. [2022-03-20 17:13:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:13:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-20 17:13:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:47,092 INFO L225 Difference]: With dead ends: 583 [2022-03-20 17:13:47,092 INFO L226 Difference]: Without dead ends: 579 [2022-03-20 17:13:47,092 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:13:47,093 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 332 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:47,093 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1637 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-03-20 17:13:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 535. [2022-03-20 17:13:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 424 states have (on average 1.2382075471698113) internal successors, (525), 433 states have internal predecessors, (525), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2022-03-20 17:13:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 663 transitions. [2022-03-20 17:13:47,219 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 663 transitions. Word has length 55 [2022-03-20 17:13:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:47,219 INFO L478 AbstractCegarLoop]: Abstraction has 535 states and 663 transitions. [2022-03-20 17:13:47,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 663 transitions. [2022-03-20 17:13:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 17:13:47,221 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:47,221 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:47,222 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 17:13:47,222 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 1 times [2022-03-20 17:13:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1723955582] [2022-03-20 17:13:47,223 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 2 times [2022-03-20 17:13:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:47,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951199349] [2022-03-20 17:13:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:47,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:47,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:47,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951199349] [2022-03-20 17:13:47,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951199349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:47,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:47,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:47,410 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:47,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1723955582] [2022-03-20 17:13:47,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1723955582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:47,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:47,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:13:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434291980] [2022-03-20 17:13:47,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:47,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:13:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:13:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:13:47,412 INFO L87 Difference]: Start difference. First operand 535 states and 663 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:48,534 INFO L93 Difference]: Finished difference Result 578 states and 713 transitions. [2022-03-20 17:13:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:13:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-20 17:13:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:48,537 INFO L225 Difference]: With dead ends: 578 [2022-03-20 17:13:48,537 INFO L226 Difference]: Without dead ends: 563 [2022-03-20 17:13:48,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:13:48,538 INFO L913 BasicCegarLoop]: 343 mSDtfsCounter, 318 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:48,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1501 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 17:13:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-03-20 17:13:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 532. [2022-03-20 17:13:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 421 states have (on average 1.2399049881235154) internal successors, (522), 431 states have internal predecessors, (522), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2022-03-20 17:13:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 659 transitions. [2022-03-20 17:13:48,658 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 659 transitions. Word has length 55 [2022-03-20 17:13:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:48,658 INFO L478 AbstractCegarLoop]: Abstraction has 532 states and 659 transitions. [2022-03-20 17:13:48,658 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 659 transitions. [2022-03-20 17:13:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 17:13:48,660 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:48,660 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:48,660 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 17:13:48,660 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 1 times [2022-03-20 17:13:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [573984732] [2022-03-20 17:13:48,661 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 2 times [2022-03-20 17:13:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379660951] [2022-03-20 17:13:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:13:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:13:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:48,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379660951] [2022-03-20 17:13:48,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379660951] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:48,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:48,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:48,860 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:48,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [573984732] [2022-03-20 17:13:48,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [573984732] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:48,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:48,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415448204] [2022-03-20 17:13:48,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:48,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:48,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:48,862 INFO L87 Difference]: Start difference. First operand 532 states and 659 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:49,956 INFO L93 Difference]: Finished difference Result 580 states and 714 transitions. [2022-03-20 17:13:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:13:49,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-03-20 17:13:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:49,960 INFO L225 Difference]: With dead ends: 580 [2022-03-20 17:13:49,960 INFO L226 Difference]: Without dead ends: 552 [2022-03-20 17:13:49,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:13:49,961 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 296 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:49,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 846 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-03-20 17:13:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 523. [2022-03-20 17:13:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 415 states have (on average 1.236144578313253) internal successors, (513), 424 states have internal predecessors, (513), 60 states have call successors, (60), 42 states have call predecessors, (60), 47 states have return successors, (74), 57 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-20 17:13:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-03-20 17:13:50,082 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 57 [2022-03-20 17:13:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:50,082 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-03-20 17:13:50,083 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-03-20 17:13:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 17:13:50,084 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:50,084 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:50,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 17:13:50,084 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 1 times [2022-03-20 17:13:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:50,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1185322542] [2022-03-20 17:13:50,085 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 2 times [2022-03-20 17:13:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:50,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823920780] [2022-03-20 17:13:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:13:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:50,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823920780] [2022-03-20 17:13:50,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823920780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:50,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:50,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:50,264 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:50,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1185322542] [2022-03-20 17:13:50,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1185322542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:50,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:50,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:13:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868846918] [2022-03-20 17:13:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:50,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:13:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:13:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:13:50,266 INFO L87 Difference]: Start difference. First operand 523 states and 647 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:51,497 INFO L93 Difference]: Finished difference Result 560 states and 689 transitions. [2022-03-20 17:13:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:13:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2022-03-20 17:13:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:51,500 INFO L225 Difference]: With dead ends: 560 [2022-03-20 17:13:51,500 INFO L226 Difference]: Without dead ends: 542 [2022-03-20 17:13:51,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:13:51,501 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 710 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:51,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 787 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:13:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-03-20 17:13:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 505. [2022-03-20 17:13:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.24) internal successors, (496), 408 states have internal predecessors, (496), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-20 17:13:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 622 transitions. [2022-03-20 17:13:51,620 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 622 transitions. Word has length 56 [2022-03-20 17:13:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:51,621 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 622 transitions. [2022-03-20 17:13:51,621 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:13:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 622 transitions. [2022-03-20 17:13:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 17:13:51,622 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:51,622 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:51,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 17:13:51,622 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 1 times [2022-03-20 17:13:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [707778871] [2022-03-20 17:13:51,623 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 2 times [2022-03-20 17:13:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124410258] [2022-03-20 17:13:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:13:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:13:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:13:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:13:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124410258] [2022-03-20 17:13:51,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124410258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:51,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:51,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:51,810 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:51,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [707778871] [2022-03-20 17:13:51,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [707778871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:51,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:51,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039916112] [2022-03-20 17:13:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:51,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:51,811 INFO L87 Difference]: Start difference. First operand 505 states and 622 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 17:13:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:52,793 INFO L93 Difference]: Finished difference Result 797 states and 994 transitions. [2022-03-20 17:13:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:13:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-20 17:13:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:52,796 INFO L225 Difference]: With dead ends: 797 [2022-03-20 17:13:52,796 INFO L226 Difference]: Without dead ends: 538 [2022-03-20 17:13:52,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:13:52,798 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 605 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:52,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 908 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:13:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-20 17:13:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 505. [2022-03-20 17:13:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.235) internal successors, (494), 408 states have internal predecessors, (494), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-20 17:13:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 620 transitions. [2022-03-20 17:13:52,930 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 620 transitions. Word has length 65 [2022-03-20 17:13:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:52,930 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 620 transitions. [2022-03-20 17:13:52,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 17:13:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 620 transitions. [2022-03-20 17:13:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 17:13:52,932 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:52,932 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:52,932 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 17:13:52,932 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 1 times [2022-03-20 17:13:52,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:52,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [361339907] [2022-03-20 17:13:52,933 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 2 times [2022-03-20 17:13:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:52,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289399881] [2022-03-20 17:13:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:13:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289399881] [2022-03-20 17:13:53,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289399881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:53,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:53,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:13:53,084 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:53,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [361339907] [2022-03-20 17:13:53,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [361339907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:53,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:53,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:13:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683486928] [2022-03-20 17:13:53,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:53,084 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:13:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:13:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:13:53,085 INFO L87 Difference]: Start difference. First operand 505 states and 620 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:53,922 INFO L93 Difference]: Finished difference Result 555 states and 678 transitions. [2022-03-20 17:13:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:13:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-20 17:13:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:53,924 INFO L225 Difference]: With dead ends: 555 [2022-03-20 17:13:53,924 INFO L226 Difference]: Without dead ends: 534 [2022-03-20 17:13:53,924 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:13:53,925 INFO L913 BasicCegarLoop]: 326 mSDtfsCounter, 440 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:53,925 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 605 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-03-20 17:13:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 504. [2022-03-20 17:13:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 399 states have (on average 1.2230576441102756) internal successors, (488), 407 states have internal predecessors, (488), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-20 17:13:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 614 transitions. [2022-03-20 17:13:54,020 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 614 transitions. Word has length 59 [2022-03-20 17:13:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:54,021 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 614 transitions. [2022-03-20 17:13:54,021 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 614 transitions. [2022-03-20 17:13:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:13:54,022 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:54,022 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:54,022 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 17:13:54,022 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 1 times [2022-03-20 17:13:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [557207699] [2022-03-20 17:13:54,023 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 2 times [2022-03-20 17:13:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651760587] [2022-03-20 17:13:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:13:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651760587] [2022-03-20 17:13:54,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651760587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:54,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:54,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:13:54,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [557207699] [2022-03-20 17:13:54,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [557207699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:54,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:54,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:13:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616738344] [2022-03-20 17:13:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:54,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:13:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:13:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:13:54,211 INFO L87 Difference]: Start difference. First operand 504 states and 614 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:55,372 INFO L93 Difference]: Finished difference Result 1241 states and 1496 transitions. [2022-03-20 17:13:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 17:13:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-03-20 17:13:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:55,375 INFO L225 Difference]: With dead ends: 1241 [2022-03-20 17:13:55,375 INFO L226 Difference]: Without dead ends: 758 [2022-03-20 17:13:55,376 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:13:55,376 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 1360 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:55,376 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 619 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:13:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-20 17:13:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 616. [2022-03-20 17:13:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 493 states have (on average 1.208924949290061) internal successors, (596), 501 states have internal predecessors, (596), 67 states have call successors, (67), 50 states have call predecessors, (67), 55 states have return successors, (77), 65 states have call predecessors, (77), 60 states have call successors, (77) [2022-03-20 17:13:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 740 transitions. [2022-03-20 17:13:55,501 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 740 transitions. Word has length 61 [2022-03-20 17:13:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:55,501 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 740 transitions. [2022-03-20 17:13:55,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 740 transitions. [2022-03-20 17:13:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:13:55,503 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:55,503 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:55,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 17:13:55,503 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 1 times [2022-03-20 17:13:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:55,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1310383943] [2022-03-20 17:13:55,504 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 2 times [2022-03-20 17:13:55,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:55,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822318958] [2022-03-20 17:13:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:55,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:13:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:55,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822318958] [2022-03-20 17:13:55,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822318958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:55,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:55,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:13:55,683 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1310383943] [2022-03-20 17:13:55,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1310383943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:55,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:55,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:13:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120362435] [2022-03-20 17:13:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:55,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:13:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:13:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:13:55,684 INFO L87 Difference]: Start difference. First operand 616 states and 740 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:56,817 INFO L93 Difference]: Finished difference Result 673 states and 807 transitions. [2022-03-20 17:13:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:13:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-03-20 17:13:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:56,819 INFO L225 Difference]: With dead ends: 673 [2022-03-20 17:13:56,819 INFO L226 Difference]: Without dead ends: 641 [2022-03-20 17:13:56,820 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:13:56,820 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 243 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:56,820 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 785 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-20 17:13:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 589. [2022-03-20 17:13:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 471 states have (on average 1.2123142250530785) internal successors, (571), 479 states have internal predecessors, (571), 65 states have call successors, (65), 48 states have call predecessors, (65), 52 states have return successors, (74), 62 states have call predecessors, (74), 58 states have call successors, (74) [2022-03-20 17:13:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 710 transitions. [2022-03-20 17:13:56,945 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 710 transitions. Word has length 61 [2022-03-20 17:13:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:56,945 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 710 transitions. [2022-03-20 17:13:56,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 17:13:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 710 transitions. [2022-03-20 17:13:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 17:13:56,947 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:56,947 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:56,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-20 17:13:56,947 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 1 times [2022-03-20 17:13:56,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [293815684] [2022-03-20 17:13:56,948 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 2 times [2022-03-20 17:13:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512995619] [2022-03-20 17:13:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:57,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:57,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512995619] [2022-03-20 17:13:57,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512995619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:57,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:57,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:13:57,149 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:57,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [293815684] [2022-03-20 17:13:57,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [293815684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:57,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:57,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:13:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605514234] [2022-03-20 17:13:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:57,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:13:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:13:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:13:57,151 INFO L87 Difference]: Start difference. First operand 589 states and 710 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:58,210 INFO L93 Difference]: Finished difference Result 653 states and 784 transitions. [2022-03-20 17:13:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:13:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2022-03-20 17:13:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:58,213 INFO L225 Difference]: With dead ends: 653 [2022-03-20 17:13:58,213 INFO L226 Difference]: Without dead ends: 632 [2022-03-20 17:13:58,214 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:13:58,214 INFO L913 BasicCegarLoop]: 326 mSDtfsCounter, 232 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:58,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1580 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:13:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-20 17:13:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-03-20 17:13:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2115384615384615) internal successors, (567), 476 states have internal predecessors, (567), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-03-20 17:13:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 704 transitions. [2022-03-20 17:13:58,398 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 704 transitions. Word has length 60 [2022-03-20 17:13:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:58,398 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 704 transitions. [2022-03-20 17:13:58,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:13:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 704 transitions. [2022-03-20 17:13:58,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 17:13:58,400 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:58,400 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:58,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 17:13:58,400 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 1 times [2022-03-20 17:13:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:58,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1063992757] [2022-03-20 17:13:58,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 2 times [2022-03-20 17:13:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836862138] [2022-03-20 17:13:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:13:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:13:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:13:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:13:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836862138] [2022-03-20 17:13:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836862138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:58,605 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1063992757] [2022-03-20 17:13:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1063992757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:13:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891529629] [2022-03-20 17:13:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:58,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:13:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:13:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:13:58,607 INFO L87 Difference]: Start difference. First operand 585 states and 704 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 17:13:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:13:59,430 INFO L93 Difference]: Finished difference Result 895 states and 1087 transitions. [2022-03-20 17:13:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:13:59,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-03-20 17:13:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:13:59,432 INFO L225 Difference]: With dead ends: 895 [2022-03-20 17:13:59,432 INFO L226 Difference]: Without dead ends: 669 [2022-03-20 17:13:59,433 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:13:59,433 INFO L913 BasicCegarLoop]: 328 mSDtfsCounter, 337 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:13:59,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1259 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:13:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-20 17:13:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 585. [2022-03-20 17:13:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2072649572649572) internal successors, (565), 476 states have internal predecessors, (565), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-03-20 17:13:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 702 transitions. [2022-03-20 17:13:59,586 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 702 transitions. Word has length 68 [2022-03-20 17:13:59,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:13:59,587 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 702 transitions. [2022-03-20 17:13:59,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 17:13:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 702 transitions. [2022-03-20 17:13:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:13:59,588 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:13:59,588 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:13:59,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 17:13:59,588 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:13:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:13:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 1 times [2022-03-20 17:13:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:59,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1684192614] [2022-03-20 17:13:59,589 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:13:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 2 times [2022-03-20 17:13:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:13:59,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483304524] [2022-03-20 17:13:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:13:59,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:13:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:13:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:13:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:13:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:13:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:13:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:13:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:13:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:13:59,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483304524] [2022-03-20 17:13:59,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483304524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:59,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:59,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:13:59,801 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:13:59,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1684192614] [2022-03-20 17:13:59,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1684192614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:13:59,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:13:59,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:13:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979656924] [2022-03-20 17:13:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:13:59,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:13:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:13:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:13:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:13:59,802 INFO L87 Difference]: Start difference. First operand 585 states and 702 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:00,843 INFO L93 Difference]: Finished difference Result 649 states and 776 transitions. [2022-03-20 17:14:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:14:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2022-03-20 17:14:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:00,845 INFO L225 Difference]: With dead ends: 649 [2022-03-20 17:14:00,845 INFO L226 Difference]: Without dead ends: 627 [2022-03-20 17:14:00,846 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:14:00,846 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 438 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:00,846 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1540 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 17:14:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-20 17:14:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 580. [2022-03-20 17:14:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 464 states have (on average 1.206896551724138) internal successors, (560), 472 states have internal predecessors, (560), 63 states have call successors, (63), 48 states have call predecessors, (63), 52 states have return successors, (72), 60 states have call predecessors, (72), 56 states have call successors, (72) [2022-03-20 17:14:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 695 transitions. [2022-03-20 17:14:00,980 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 695 transitions. Word has length 61 [2022-03-20 17:14:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:00,980 INFO L478 AbstractCegarLoop]: Abstraction has 580 states and 695 transitions. [2022-03-20 17:14:00,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 695 transitions. [2022-03-20 17:14:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 17:14:00,981 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:00,981 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:00,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 17:14:00,982 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 1 times [2022-03-20 17:14:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:00,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1803360094] [2022-03-20 17:14:00,982 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 2 times [2022-03-20 17:14:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:00,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945518534] [2022-03-20 17:14:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945518534] [2022-03-20 17:14:01,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945518534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:01,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:01,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:01,191 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1803360094] [2022-03-20 17:14:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1803360094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:01,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:01,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54794157] [2022-03-20 17:14:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:01,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:14:01,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:14:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:14:01,192 INFO L87 Difference]: Start difference. First operand 580 states and 695 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:02,084 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2022-03-20 17:14:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:14:02,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2022-03-20 17:14:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:02,086 INFO L225 Difference]: With dead ends: 644 [2022-03-20 17:14:02,086 INFO L226 Difference]: Without dead ends: 623 [2022-03-20 17:14:02,087 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:14:02,087 INFO L913 BasicCegarLoop]: 315 mSDtfsCounter, 353 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:02,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1510 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:14:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-03-20 17:14:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 576. [2022-03-20 17:14:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 461 states have (on average 1.2060737527114966) internal successors, (556), 469 states have internal predecessors, (556), 62 states have call successors, (62), 48 states have call predecessors, (62), 52 states have return successors, (71), 59 states have call predecessors, (71), 55 states have call successors, (71) [2022-03-20 17:14:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 689 transitions. [2022-03-20 17:14:02,207 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 689 transitions. Word has length 61 [2022-03-20 17:14:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:02,207 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 689 transitions. [2022-03-20 17:14:02,207 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 689 transitions. [2022-03-20 17:14:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 17:14:02,208 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:02,208 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:02,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 17:14:02,209 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 888922982, now seen corresponding path program 1 times [2022-03-20 17:14:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [821475398] [2022-03-20 17:14:02,210 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 888922982, now seen corresponding path program 2 times [2022-03-20 17:14:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:02,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770402592] [2022-03-20 17:14:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:14:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:14:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:02,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770402592] [2022-03-20 17:14:02,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770402592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:02,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:02,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:14:02,362 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [821475398] [2022-03-20 17:14:02,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [821475398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:02,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:02,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:14:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640535929] [2022-03-20 17:14:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:02,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:14:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:14:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:14:02,365 INFO L87 Difference]: Start difference. First operand 576 states and 689 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 17:14:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:03,197 INFO L93 Difference]: Finished difference Result 1020 states and 1238 transitions. [2022-03-20 17:14:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:14:03,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-20 17:14:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:03,199 INFO L225 Difference]: With dead ends: 1020 [2022-03-20 17:14:03,199 INFO L226 Difference]: Without dead ends: 767 [2022-03-20 17:14:03,200 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:14:03,200 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 464 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:03,201 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 887 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 17:14:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-20 17:14:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 697. [2022-03-20 17:14:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 554 states have (on average 1.2021660649819494) internal successors, (666), 564 states have internal predecessors, (666), 75 states have call successors, (75), 58 states have call predecessors, (75), 67 states have return successors, (96), 75 states have call predecessors, (96), 69 states have call successors, (96) [2022-03-20 17:14:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 837 transitions. [2022-03-20 17:14:03,355 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 837 transitions. Word has length 67 [2022-03-20 17:14:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:03,355 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 837 transitions. [2022-03-20 17:14:03,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 17:14:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 837 transitions. [2022-03-20 17:14:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 17:14:03,356 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:03,356 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:03,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 17:14:03,357 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:03,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 1 times [2022-03-20 17:14:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:03,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [35562324] [2022-03-20 17:14:03,357 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 2 times [2022-03-20 17:14:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:03,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378400439] [2022-03-20 17:14:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:14:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:03,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378400439] [2022-03-20 17:14:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378400439] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:03,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:03,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:03,535 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [35562324] [2022-03-20 17:14:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [35562324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:03,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:03,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:03,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242167641] [2022-03-20 17:14:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:03,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:14:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:14:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:14:03,537 INFO L87 Difference]: Start difference. First operand 697 states and 837 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:04,493 INFO L93 Difference]: Finished difference Result 761 states and 912 transitions. [2022-03-20 17:14:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:14:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-03-20 17:14:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:04,495 INFO L225 Difference]: With dead ends: 761 [2022-03-20 17:14:04,495 INFO L226 Difference]: Without dead ends: 718 [2022-03-20 17:14:04,496 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:14:04,496 INFO L913 BasicCegarLoop]: 307 mSDtfsCounter, 384 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:04,496 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1419 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:14:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-20 17:14:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 671. [2022-03-20 17:14:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 533 states have (on average 1.200750469043152) internal successors, (640), 543 states have internal predecessors, (640), 72 states have call successors, (72), 56 states have call predecessors, (72), 65 states have return successors, (93), 72 states have call predecessors, (93), 66 states have call successors, (93) [2022-03-20 17:14:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 805 transitions. [2022-03-20 17:14:04,661 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 805 transitions. Word has length 65 [2022-03-20 17:14:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:04,661 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 805 transitions. [2022-03-20 17:14:04,661 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 17:14:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 805 transitions. [2022-03-20 17:14:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 17:14:04,662 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:04,663 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:04,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 17:14:04,663 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 1 times [2022-03-20 17:14:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1119511953] [2022-03-20 17:14:04,664 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 2 times [2022-03-20 17:14:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:04,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716588746] [2022-03-20 17:14:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:14:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:14:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 17:14:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:04,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716588746] [2022-03-20 17:14:04,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716588746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:04,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:04,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:14:04,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:04,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1119511953] [2022-03-20 17:14:04,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1119511953] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:04,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:04,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:14:04,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926183834] [2022-03-20 17:14:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:04,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:14:04,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:14:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:14:04,828 INFO L87 Difference]: Start difference. First operand 671 states and 805 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 17:14:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:05,694 INFO L93 Difference]: Finished difference Result 1023 states and 1237 transitions. [2022-03-20 17:14:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 17:14:05,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-03-20 17:14:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:05,698 INFO L225 Difference]: With dead ends: 1023 [2022-03-20 17:14:05,698 INFO L226 Difference]: Without dead ends: 706 [2022-03-20 17:14:05,699 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:14:05,699 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 458 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:05,700 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1129 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 17:14:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-20 17:14:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 653. [2022-03-20 17:14:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 519 states have (on average 1.2003853564547207) internal successors, (623), 528 states have internal predecessors, (623), 70 states have call successors, (70), 56 states have call predecessors, (70), 63 states have return successors, (82), 69 states have call predecessors, (82), 64 states have call successors, (82) [2022-03-20 17:14:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 775 transitions. [2022-03-20 17:14:05,834 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 775 transitions. Word has length 79 [2022-03-20 17:14:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:05,834 INFO L478 AbstractCegarLoop]: Abstraction has 653 states and 775 transitions. [2022-03-20 17:14:05,834 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 17:14:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 775 transitions. [2022-03-20 17:14:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 17:14:05,836 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:05,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:05,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 17:14:05,836 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 1 times [2022-03-20 17:14:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:05,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [367142570] [2022-03-20 17:14:05,837 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 2 times [2022-03-20 17:14:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:05,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055192486] [2022-03-20 17:14:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:14:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:14:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 17:14:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055192486] [2022-03-20 17:14:06,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055192486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:06,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:06,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:06,073 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [367142570] [2022-03-20 17:14:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [367142570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:06,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:06,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:14:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999332485] [2022-03-20 17:14:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:06,074 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:14:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:14:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:14:06,075 INFO L87 Difference]: Start difference. First operand 653 states and 775 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:07,050 INFO L93 Difference]: Finished difference Result 1058 states and 1297 transitions. [2022-03-20 17:14:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 17:14:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-03-20 17:14:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:07,054 INFO L225 Difference]: With dead ends: 1058 [2022-03-20 17:14:07,054 INFO L226 Difference]: Without dead ends: 804 [2022-03-20 17:14:07,055 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:14:07,055 INFO L913 BasicCegarLoop]: 353 mSDtfsCounter, 470 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:07,056 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1477 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:14:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-20 17:14:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 617. [2022-03-20 17:14:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.2) internal successors, (594), 502 states have internal predecessors, (594), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-03-20 17:14:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 729 transitions. [2022-03-20 17:14:07,204 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 729 transitions. Word has length 80 [2022-03-20 17:14:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:07,204 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 729 transitions. [2022-03-20 17:14:07,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 729 transitions. [2022-03-20 17:14:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-20 17:14:07,205 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:07,205 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:07,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-20 17:14:07,205 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 1 times [2022-03-20 17:14:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:07,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [833861487] [2022-03-20 17:14:07,206 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 2 times [2022-03-20 17:14:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471792564] [2022-03-20 17:14:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:07,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:14:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 17:14:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:07,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471792564] [2022-03-20 17:14:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471792564] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:07,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:07,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:14:07,453 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [833861487] [2022-03-20 17:14:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [833861487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:07,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:07,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:14:07,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049111294] [2022-03-20 17:14:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:07,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 17:14:07,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:07,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 17:14:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:14:07,455 INFO L87 Difference]: Start difference. First operand 617 states and 729 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:08,506 INFO L93 Difference]: Finished difference Result 727 states and 856 transitions. [2022-03-20 17:14:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 17:14:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-03-20 17:14:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:08,508 INFO L225 Difference]: With dead ends: 727 [2022-03-20 17:14:08,508 INFO L226 Difference]: Without dead ends: 706 [2022-03-20 17:14:08,509 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-03-20 17:14:08,509 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 456 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:08,509 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1666 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:14:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-20 17:14:08,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 625. [2022-03-20 17:14:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 502 states have (on average 1.197211155378486) internal successors, (601), 509 states have internal predecessors, (601), 63 states have call successors, (63), 50 states have call predecessors, (63), 59 states have return successors, (75), 66 states have call predecessors, (75), 58 states have call successors, (75) [2022-03-20 17:14:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 739 transitions. [2022-03-20 17:14:08,677 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 739 transitions. Word has length 85 [2022-03-20 17:14:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:08,677 INFO L478 AbstractCegarLoop]: Abstraction has 625 states and 739 transitions. [2022-03-20 17:14:08,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 739 transitions. [2022-03-20 17:14:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-20 17:14:08,679 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:08,683 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:08,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 17:14:08,683 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 1 times [2022-03-20 17:14:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1420753807] [2022-03-20 17:14:08,684 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 2 times [2022-03-20 17:14:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509813485] [2022-03-20 17:14:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:08,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:14:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:14:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:14:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:14:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509813485] [2022-03-20 17:14:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509813485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:08,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:08,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:14:08,905 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1420753807] [2022-03-20 17:14:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1420753807] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:08,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:08,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:14:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167232376] [2022-03-20 17:14:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:08,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 17:14:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 17:14:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:14:08,908 INFO L87 Difference]: Start difference. First operand 625 states and 739 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:10,123 INFO L93 Difference]: Finished difference Result 727 states and 855 transitions. [2022-03-20 17:14:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 17:14:10,123 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-03-20 17:14:10,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:10,125 INFO L225 Difference]: With dead ends: 727 [2022-03-20 17:14:10,125 INFO L226 Difference]: Without dead ends: 706 [2022-03-20 17:14:10,126 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:14:10,126 INFO L913 BasicCegarLoop]: 318 mSDtfsCounter, 222 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:10,126 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1816 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 17:14:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-20 17:14:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 617. [2022-03-20 17:14:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.197979797979798) internal successors, (593), 502 states have internal predecessors, (593), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-03-20 17:14:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 728 transitions. [2022-03-20 17:14:10,261 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 728 transitions. Word has length 86 [2022-03-20 17:14:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:10,261 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 728 transitions. [2022-03-20 17:14:10,261 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 17:14:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 728 transitions. [2022-03-20 17:14:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-20 17:14:10,262 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:10,262 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:10,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 17:14:10,262 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 1 times [2022-03-20 17:14:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1104069946] [2022-03-20 17:14:10,263 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 2 times [2022-03-20 17:14:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487814641] [2022-03-20 17:14:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:14:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:14:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:14:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:14:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 17:14:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:14:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:14:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:14:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:14:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487814641] [2022-03-20 17:14:10,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487814641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:10,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:10,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:14:10,466 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:14:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1104069946] [2022-03-20 17:14:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1104069946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:14:10,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:14:10,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:14:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428932294] [2022-03-20 17:14:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:14:10,469 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:14:10,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:14:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:14:10,469 INFO L87 Difference]: Start difference. First operand 617 states and 728 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-20 17:14:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:14:11,513 INFO L93 Difference]: Finished difference Result 1164 states and 1359 transitions. [2022-03-20 17:14:11,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 17:14:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 81 [2022-03-20 17:14:11,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:14:11,516 INFO L225 Difference]: With dead ends: 1164 [2022-03-20 17:14:11,516 INFO L226 Difference]: Without dead ends: 764 [2022-03-20 17:14:11,517 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:14:11,519 INFO L913 BasicCegarLoop]: 332 mSDtfsCounter, 825 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 17:14:11,520 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 544 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 17:14:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-20 17:14:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 738. [2022-03-20 17:14:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 592 states have (on average 1.1891891891891893) internal successors, (704), 601 states have internal predecessors, (704), 71 states have call successors, (71), 62 states have call predecessors, (71), 74 states have return successors, (84), 75 states have call predecessors, (84), 66 states have call successors, (84) [2022-03-20 17:14:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 859 transitions. [2022-03-20 17:14:11,686 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 859 transitions. Word has length 81 [2022-03-20 17:14:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:14:11,686 INFO L478 AbstractCegarLoop]: Abstraction has 738 states and 859 transitions. [2022-03-20 17:14:11,686 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-20 17:14:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 859 transitions. [2022-03-20 17:14:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-20 17:14:11,687 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:14:11,687 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:14:11,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 17:14:11,688 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:14:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:14:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 1 times [2022-03-20 17:14:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:14:11,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1201264167] [2022-03-20 17:14:11,688 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:14:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 2 times [2022-03-20 17:14:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:14:11,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857366619] [2022-03-20 17:14:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:14:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:14:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 17:14:11,702 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 17:14:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 17:14:11,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 17:14:11,776 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-20 17:14:11,776 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 17:14:11,780 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 17:14:11,781 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-20 17:14:11,784 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-20 17:14:11,786 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 17:14:11,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:14:11 BoogieIcfgContainer [2022-03-20 17:14:11,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 17:14:11,823 INFO L158 Benchmark]: Toolchain (without parser) took 53442.80ms. Allocated memory was 173.0MB in the beginning and 550.5MB in the end (delta: 377.5MB). Free memory was 124.8MB in the beginning and 411.0MB in the end (delta: -286.2MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. [2022-03-20 17:14:11,823 INFO L158 Benchmark]: CDTParser took 3.46ms. Allocated memory is still 173.0MB. Free memory was 142.5MB in the beginning and 142.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:14:11,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.49ms. Allocated memory is still 173.0MB. Free memory was 124.6MB in the beginning and 144.2MB in the end (delta: -19.6MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-03-20 17:14:11,824 INFO L158 Benchmark]: Boogie Preprocessor took 75.15ms. Allocated memory is still 173.0MB. Free memory was 143.9MB in the beginning and 140.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-20 17:14:11,825 INFO L158 Benchmark]: RCFGBuilder took 701.51ms. Allocated memory is still 173.0MB. Free memory was 140.3MB in the beginning and 100.5MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-03-20 17:14:11,825 INFO L158 Benchmark]: TraceAbstraction took 52294.37ms. Allocated memory was 173.0MB in the beginning and 550.5MB in the end (delta: 377.5MB). Free memory was 100.1MB in the beginning and 411.0MB in the end (delta: -311.0MB). Peak memory consumption was 67.9MB. Max. memory is 8.0GB. [2022-03-20 17:14:11,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.46ms. Allocated memory is still 173.0MB. Free memory was 142.5MB in the beginning and 142.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 367.49ms. Allocated memory is still 173.0MB. Free memory was 124.6MB in the beginning and 144.2MB in the end (delta: -19.6MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.15ms. Allocated memory is still 173.0MB. Free memory was 143.9MB in the beginning and 140.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 701.51ms. Allocated memory is still 173.0MB. Free memory was 140.3MB in the beginning and 100.5MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 52294.37ms. Allocated memory was 173.0MB in the beginning and 550.5MB in the end (delta: 377.5MB). Free memory was 100.1MB in the beginning and 411.0MB in the end (delta: -311.0MB). Peak memory consumption was 67.9MB. 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: 65]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ [L196] COND TRUE PagingReferenceCount == 1 [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) [L210] COND FALSE !(irpSp__MinorFunction == 0) [L213] COND TRUE irpSp__MinorFunction == 5 [L239] COND TRUE irpSp__MinorFunction == 5 [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L153] COND TRUE pended == 0 [L154] pended = 1 [L160] return (259); [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus [L263] COND TRUE __cil_tmp29 == 259L [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1036] COND FALSE !(s == MPR3) [L1045] COND FALSE !(customIrp == 1) [L1049] COND FALSE !(s == MPR3) [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 [L1064] return (0); [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L268] COND TRUE disketteExtension__FloppyThread != 0 [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 [L274] COND TRUE s == NP [L275] s = SKIP1 [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; [L944] COND FALSE !(\read(compRegistered)) [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 [L970] returnVal2 = 0 [L983] COND FALSE !(s == NP) [L987] COND FALSE !(s == MPR1) [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 [L1006] return (returnVal2); [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- [L431] COND TRUE PagingReferenceCount == 0 [L434] return (ntStatus); [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 [L751] COND FALSE !(s == NP) [L758] COND TRUE pended == 1 [L759] COND FALSE !(s == MPR3) [L766] COND TRUE s != UNLOADED [L767] COND TRUE status != -1 [L768] COND FALSE !(s != SKIP2) [L782] COND TRUE pended == 1 [L783] COND TRUE status != 259 [L784] CALL errorFn() [L65] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.2s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19838 SdHoareTripleChecker+Valid, 30.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19544 mSDsluCounter, 37140 SdHoareTripleChecker+Invalid, 25.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23846 mSDsCounter, 6584 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46130 IncrementalHoareTripleChecker+Invalid, 52714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6584 mSolverCounterUnsat, 13294 mSDtfsCounter, 46130 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=845occurred in iteration=10, InterpolantAutomatonStates: 435, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 38 MinimizatonAttempts, 2276 StatesRemovedByMinimization, 38 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! [2022-03-20 17:14:11,862 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...