/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 05:22:29,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:22:29,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:22:29,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 05:22:29,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 05:22:29,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 05:22:29,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 05:22:29,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 05:22:29,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 05:22:29,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 05:22:29,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 05:22:29,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 05:22:29,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:22:29,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:22:29,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:22:29,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:22:29,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:22:29,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:22:29,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:22:29,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:22:29,833 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:22:29,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:22:29,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:22:29,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:22:29,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:22:29,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 05:22:29,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:22:29,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:22:29,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:22:29,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:22:29,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:22:29,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:22:29,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:22:29,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:22:29,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:22:29,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:22:29,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:22:29,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:22:29,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:22:29,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:22:29,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:22:29,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:22:29,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:22:29,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:22:29,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:22:29,871 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:22:30,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:22:30,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:22:30,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:22:30,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:22:30,084 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:22:30,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-18 05:22:30,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f6cf24/ff71114d85184684834ece5e0bb1576c/FLAG2667a5702 [2022-03-18 05:22:30,555 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:22:30,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-18 05:22:30,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f6cf24/ff71114d85184684834ece5e0bb1576c/FLAG2667a5702 [2022-03-18 05:22:30,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161f6cf24/ff71114d85184684834ece5e0bb1576c [2022-03-18 05:22:30,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:22:30,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:22:30,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:22:30,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:22:30,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:22:30,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:22:30" (1/1) ... [2022-03-18 05:22:30,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5045f711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:30, skipping insertion in model container [2022-03-18 05:22:30,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:22:30" (1/1) ... [2022-03-18 05:22:30,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:22:30,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:22:31,103 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/diskperf_simpl1.cil.c[2072,2085] [2022-03-18 05:22:31,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:22:31,201 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:22:31,210 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/diskperf_simpl1.cil.c[2072,2085] [2022-03-18 05:22:31,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:22:31,270 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:22:31,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31 WrapperNode [2022-03-18 05:22:31,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:22:31,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:22:31,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:22:31,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:22:31,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:22:31,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:22:31,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:22:31,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:22:31,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (1/1) ... [2022-03-18 05:22:31,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:22:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:22:31,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 05:22:31,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 05:22:31,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:22:31,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-18 05:22:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:22:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:22:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:22:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-18 05:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:22:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:22:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:22:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:22:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:22:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:22:31,559 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:22:31,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:22:31,613 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-18 05:22:31,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-18 05:22:31,711 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,752 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:22:31,753 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:22:31,777 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,787 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:22:31,788 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:22:31,791 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,799 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:22:31,799 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:22:31,924 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-18 05:22:31,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-18 05:22:31,978 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:22:31,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 05:22:31,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 05:22:32,025 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:22:32,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:22:32,037 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 05:22:32,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:22:32 BoogieIcfgContainer [2022-03-18 05:22:32,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:22:32,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:22:32,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:22:32,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:22:32,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:22:30" (1/3) ... [2022-03-18 05:22:32,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c264d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:22:32, skipping insertion in model container [2022-03-18 05:22:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:22:31" (2/3) ... [2022-03-18 05:22:32,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c264d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:22:32, skipping insertion in model container [2022-03-18 05:22:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:22:32" (3/3) ... [2022-03-18 05:22:32,049 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2022-03-18 05:22:32,054 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:22:32,055 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:22:32,095 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:22:32,100 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 05:22:32,100 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:22:32,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 05:22:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 05:22:32,119 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:32,120 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:32,120 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 1 times [2022-03-18 05:22:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2018957679] [2022-03-18 05:22:32,136 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 2 times [2022-03-18 05:22:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:32,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941839435] [2022-03-18 05:22:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:32,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:32,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941839435] [2022-03-18 05:22:32,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941839435] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:32,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:32,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:22:32,435 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:32,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2018957679] [2022-03-18 05:22:32,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2018957679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:32,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:32,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:22:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991082740] [2022-03-18 05:22:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:32,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:22:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:22:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:22:32,468 INFO L87 Difference]: Start difference. First operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 05:22:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:33,236 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-03-18 05:22:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:22:33,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-18 05:22:33,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:33,248 INFO L225 Difference]: With dead ends: 576 [2022-03-18 05:22:33,248 INFO L226 Difference]: Without dead ends: 326 [2022-03-18 05:22:33,253 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:22:33,255 INFO L912 BasicCegarLoop]: 355 mSDtfsCounter, 234 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:33,256 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-18 05:22:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-18 05:22:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 05:22:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-18 05:22:33,308 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-18 05:22:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:33,308 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-18 05:22:33,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 05:22:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-18 05:22:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-18 05:22:33,309 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:33,310 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:33,310 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:22:33,310 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 1 times [2022-03-18 05:22:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:33,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [201331305] [2022-03-18 05:22:33,311 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 2 times [2022-03-18 05:22:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:33,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513463248] [2022-03-18 05:22:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:33,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:33,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:33,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513463248] [2022-03-18 05:22:33,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513463248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:33,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:33,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:33,534 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:33,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [201331305] [2022-03-18 05:22:33,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [201331305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:33,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:33,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:33,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546732375] [2022-03-18 05:22:33,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:33,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:22:33,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:22:33,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:22:33,536 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:34,269 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2022-03-18 05:22:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:22:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-18 05:22:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:34,274 INFO L225 Difference]: With dead ends: 690 [2022-03-18 05:22:34,274 INFO L226 Difference]: Without dead ends: 507 [2022-03-18 05:22:34,275 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:34,276 INFO L912 BasicCegarLoop]: 490 mSDtfsCounter, 573 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:34,276 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 682 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-18 05:22:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-18 05:22:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2022-03-18 05:22:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-18 05:22:34,330 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-18 05:22:34,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:34,331 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-18 05:22:34,331 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-18 05:22:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 05:22:34,343 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:34,344 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:34,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 05:22:34,344 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 1 times [2022-03-18 05:22:34,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:34,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1430970300] [2022-03-18 05:22:34,345 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 2 times [2022-03-18 05:22:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:34,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097165725] [2022-03-18 05:22:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:34,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:34,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:34,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097165725] [2022-03-18 05:22:34,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097165725] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:34,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:34,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:34,482 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:34,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1430970300] [2022-03-18 05:22:34,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1430970300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:34,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:34,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303205595] [2022-03-18 05:22:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:34,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:22:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:22:34,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:22:34,483 INFO L87 Difference]: Start difference. First operand 440 states and 608 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, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:35,158 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2022-03-18 05:22:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:22:35,159 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, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-18 05:22:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:35,167 INFO L225 Difference]: With dead ends: 1013 [2022-03-18 05:22:35,168 INFO L226 Difference]: Without dead ends: 690 [2022-03-18 05:22:35,173 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:35,175 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 504 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:35,179 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 586 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-18 05:22:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-18 05:22:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-18 05:22:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-18 05:22:35,238 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-18 05:22:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:35,238 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-18 05:22:35,240 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, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-18 05:22:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 05:22:35,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:35,259 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:35,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 05:22:35,260 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 1 times [2022-03-18 05:22:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:35,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [398102282] [2022-03-18 05:22:35,264 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 2 times [2022-03-18 05:22:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906721079] [2022-03-18 05:22:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:35,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906721079] [2022-03-18 05:22:35,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906721079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:35,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:35,383 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:35,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [398102282] [2022-03-18 05:22:35,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [398102282] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:35,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637129377] [2022-03-18 05:22:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:35,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:22:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:22:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:22:35,385 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-03-18 05:22:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:36,068 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2022-03-18 05:22:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:22:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 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 36 [2022-03-18 05:22:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:36,072 INFO L225 Difference]: With dead ends: 665 [2022-03-18 05:22:36,072 INFO L226 Difference]: Without dead ends: 661 [2022-03-18 05:22:36,073 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:22:36,073 INFO L912 BasicCegarLoop]: 340 mSDtfsCounter, 126 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:36,073 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 590 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-18 05:22:36,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-18 05:22:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-18 05:22:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-18 05:22:36,110 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-18 05:22:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:36,110 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-18 05:22:36,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-03-18 05:22:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-18 05:22:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 05:22:36,112 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:36,112 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:36,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 05:22:36,112 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 1 times [2022-03-18 05:22:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1729336791] [2022-03-18 05:22:36,113 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 2 times [2022-03-18 05:22:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:36,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694075253] [2022-03-18 05:22:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:36,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694075253] [2022-03-18 05:22:36,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694075253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:36,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:36,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:36,322 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:36,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1729336791] [2022-03-18 05:22:36,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1729336791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:36,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:36,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668335730] [2022-03-18 05:22:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:36,323 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:36,323 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:37,370 INFO L93 Difference]: Finished difference Result 716 states and 1015 transitions. [2022-03-18 05:22:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-18 05:22:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:37,373 INFO L225 Difference]: With dead ends: 716 [2022-03-18 05:22:37,374 INFO L226 Difference]: Without dead ends: 705 [2022-03-18 05:22:37,374 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:22:37,374 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 1044 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:37,375 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 750 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:22:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-18 05:22:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-18 05:22:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-18 05:22:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-18 05:22:37,427 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-18 05:22:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:37,427 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-18 05:22:37,427 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-18 05:22:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 05:22:37,428 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:37,428 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:37,428 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 05:22:37,428 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:37,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 1 times [2022-03-18 05:22:37,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:37,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1916637833] [2022-03-18 05:22:37,429 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 2 times [2022-03-18 05:22:37,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:37,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649778958] [2022-03-18 05:22:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:37,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649778958] [2022-03-18 05:22:37,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649778958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:37,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:37,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:37,592 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:37,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1916637833] [2022-03-18 05:22:37,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1916637833] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:37,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:37,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496004524] [2022-03-18 05:22:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:37,604 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:37,605 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:38,459 INFO L93 Difference]: Finished difference Result 713 states and 1008 transitions. [2022-03-18 05:22:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:38,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-03-18 05:22:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:38,462 INFO L225 Difference]: With dead ends: 713 [2022-03-18 05:22:38,462 INFO L226 Difference]: Without dead ends: 705 [2022-03-18 05:22:38,463 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:22:38,463 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 787 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:38,463 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 653 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-18 05:22:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-18 05:22:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-18 05:22:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-18 05:22:38,512 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-18 05:22:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:38,512 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-18 05:22:38,512 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-18 05:22:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 05:22:38,513 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:38,513 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:38,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 05:22:38,513 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 1 times [2022-03-18 05:22:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [146714335] [2022-03-18 05:22:38,514 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 2 times [2022-03-18 05:22:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664066242] [2022-03-18 05:22:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:38,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664066242] [2022-03-18 05:22:38,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664066242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:38,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:38,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:38,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [146714335] [2022-03-18 05:22:38,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [146714335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:38,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:38,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679487639] [2022-03-18 05:22:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:38,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:22:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:38,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:22:38,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:38,617 INFO L87 Difference]: Start difference. First operand 658 states and 935 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), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:39,524 INFO L93 Difference]: Finished difference Result 1215 states and 1783 transitions. [2022-03-18 05:22:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:22:39,524 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), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-03-18 05:22:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:39,530 INFO L225 Difference]: With dead ends: 1215 [2022-03-18 05:22:39,530 INFO L226 Difference]: Without dead ends: 1186 [2022-03-18 05:22:39,531 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:39,532 INFO L912 BasicCegarLoop]: 392 mSDtfsCounter, 995 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:39,532 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 798 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:22:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-18 05:22:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-18 05:22:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2022-03-18 05:22:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-18 05:22:39,645 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-18 05:22:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:39,645 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-18 05:22:39,645 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), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-18 05:22:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 05:22:39,646 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:39,646 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:39,646 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 05:22:39,647 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 1 times [2022-03-18 05:22:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:39,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [713229329] [2022-03-18 05:22:39,647 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 2 times [2022-03-18 05:22:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:39,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182293751] [2022-03-18 05:22:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 05:22:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:39,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:39,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182293751] [2022-03-18 05:22:39,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182293751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:39,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:39,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:39,768 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:39,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [713229329] [2022-03-18 05:22:39,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [713229329] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:39,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:39,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478003661] [2022-03-18 05:22:39,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:39,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:22:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:22:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:39,769 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:40,375 INFO L93 Difference]: Finished difference Result 1170 states and 1724 transitions. [2022-03-18 05:22:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:22:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-03-18 05:22:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:40,380 INFO L225 Difference]: With dead ends: 1170 [2022-03-18 05:22:40,380 INFO L226 Difference]: Without dead ends: 1148 [2022-03-18 05:22:40,381 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:40,382 INFO L912 BasicCegarLoop]: 327 mSDtfsCounter, 458 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:40,382 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1018 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-18 05:22:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-18 05:22:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2022-03-18 05:22:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-18 05:22:40,493 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-18 05:22:40,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:40,493 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-18 05:22:40,493 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:40,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-18 05:22:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 05:22:40,494 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:40,494 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:40,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 05:22:40,494 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 1 times [2022-03-18 05:22:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:40,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [564756043] [2022-03-18 05:22:40,495 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 2 times [2022-03-18 05:22:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:40,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058165373] [2022-03-18 05:22:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:40,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058165373] [2022-03-18 05:22:40,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058165373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:40,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:40,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:40,582 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [564756043] [2022-03-18 05:22:40,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [564756043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:40,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:40,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:22:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918692939] [2022-03-18 05:22:40,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:40,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:22:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:22:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 05:22:40,583 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:41,190 INFO L93 Difference]: Finished difference Result 1507 states and 2275 transitions. [2022-03-18 05:22:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:22:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-03-18 05:22:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:41,194 INFO L225 Difference]: With dead ends: 1507 [2022-03-18 05:22:41,194 INFO L226 Difference]: Without dead ends: 599 [2022-03-18 05:22:41,198 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:41,199 INFO L912 BasicCegarLoop]: 281 mSDtfsCounter, 370 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:41,199 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 340 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-18 05:22:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-18 05:22:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2022-03-18 05:22:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-18 05:22:41,243 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-18 05:22:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:41,243 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-18 05:22:41,243 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 05:22:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-18 05:22:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 05:22:41,244 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:41,244 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:41,244 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 05:22:41,244 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:41,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 1 times [2022-03-18 05:22:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:41,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [646185582] [2022-03-18 05:22:41,245 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 2 times [2022-03-18 05:22:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915955574] [2022-03-18 05:22:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:22:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915955574] [2022-03-18 05:22:41,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915955574] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:41,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:41,397 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [646185582] [2022-03-18 05:22:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [646185582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:41,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163202223] [2022-03-18 05:22:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:41,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:41,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:41,398 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:42,254 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2022-03-18 05:22:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:22:42,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-18 05:22:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:42,257 INFO L225 Difference]: With dead ends: 633 [2022-03-18 05:22:42,257 INFO L226 Difference]: Without dead ends: 608 [2022-03-18 05:22:42,257 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:42,258 INFO L912 BasicCegarLoop]: 293 mSDtfsCounter, 112 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:42,258 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1208 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:22:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-18 05:22:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-18 05:22:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2022-03-18 05:22:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-18 05:22:42,301 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-18 05:22:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:42,302 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-18 05:22:42,302 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-18 05:22:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 05:22:42,302 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:42,302 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:42,302 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 05:22:42,303 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 1 times [2022-03-18 05:22:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:42,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2110019905] [2022-03-18 05:22:42,303 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 2 times [2022-03-18 05:22:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:42,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821439118] [2022-03-18 05:22:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821439118] [2022-03-18 05:22:42,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821439118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:42,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:42,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:42,420 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2110019905] [2022-03-18 05:22:42,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2110019905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:42,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:42,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553018262] [2022-03-18 05:22:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:42,421 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:22:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:22:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:42,422 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:43,282 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2022-03-18 05:22:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:22:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-03-18 05:22:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:43,287 INFO L225 Difference]: With dead ends: 834 [2022-03-18 05:22:43,287 INFO L226 Difference]: Without dead ends: 826 [2022-03-18 05:22:43,288 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:43,288 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 498 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:43,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 703 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:22:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-18 05:22:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-18 05:22:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2022-03-18 05:22:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-18 05:22:43,348 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-18 05:22:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:43,349 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-18 05:22:43,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-18 05:22:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:43,350 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:43,350 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:43,350 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 05:22:43,350 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 1 times [2022-03-18 05:22:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:43,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [134188418] [2022-03-18 05:22:43,351 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 2 times [2022-03-18 05:22:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:43,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844419896] [2022-03-18 05:22:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:22:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:43,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844419896] [2022-03-18 05:22:43,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844419896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:43,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:43,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:43,467 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:43,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [134188418] [2022-03-18 05:22:43,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [134188418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:43,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:43,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:43,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783778311] [2022-03-18 05:22:43,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:43,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:22:43,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:22:43,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:43,468 INFO L87 Difference]: Start difference. First operand 665 states and 948 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, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:22:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:44,105 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2022-03-18 05:22:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:22:44,106 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, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-03-18 05:22:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:44,108 INFO L225 Difference]: With dead ends: 739 [2022-03-18 05:22:44,108 INFO L226 Difference]: Without dead ends: 462 [2022-03-18 05:22:44,109 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:44,110 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 549 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:44,110 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 651 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-18 05:22:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-18 05:22:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2022-03-18 05:22:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-18 05:22:44,157 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 50 [2022-03-18 05:22:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:44,157 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-18 05:22:44,157 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, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 05:22:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-18 05:22:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 05:22:44,157 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:44,158 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:44,158 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 05:22:44,158 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:44,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 1 times [2022-03-18 05:22:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:44,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [893057279] [2022-03-18 05:22:44,158 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 2 times [2022-03-18 05:22:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:44,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409361434] [2022-03-18 05:22:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:44,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409361434] [2022-03-18 05:22:44,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409361434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:44,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:44,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:44,337 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:44,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [893057279] [2022-03-18 05:22:44,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [893057279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:44,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:44,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567600557] [2022-03-18 05:22:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:44,337 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:22:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:22:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:44,338 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 05:22:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:45,279 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2022-03-18 05:22:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:45,279 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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 47 [2022-03-18 05:22:45,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:45,281 INFO L225 Difference]: With dead ends: 457 [2022-03-18 05:22:45,281 INFO L226 Difference]: Without dead ends: 453 [2022-03-18 05:22:45,282 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:45,282 INFO L912 BasicCegarLoop]: 284 mSDtfsCounter, 91 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:45,282 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1490 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:22:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-18 05:22:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-18 05:22:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2022-03-18 05:22:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-18 05:22:45,341 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-18 05:22:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:45,342 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-18 05:22:45,343 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 05:22:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-18 05:22:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 05:22:45,344 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:45,344 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:45,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 05:22:45,344 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:45,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 1 times [2022-03-18 05:22:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:45,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1219138211] [2022-03-18 05:22:45,344 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 2 times [2022-03-18 05:22:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:45,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502115130] [2022-03-18 05:22:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502115130] [2022-03-18 05:22:45,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502115130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:45,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:45,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:45,529 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1219138211] [2022-03-18 05:22:45,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1219138211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:45,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:45,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338759461] [2022-03-18 05:22:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:45,529 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:22:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:22:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:45,530 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 05:22:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:46,218 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2022-03-18 05:22:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:46,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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 47 [2022-03-18 05:22:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:46,221 INFO L225 Difference]: With dead ends: 780 [2022-03-18 05:22:46,221 INFO L226 Difference]: Without dead ends: 472 [2022-03-18 05:22:46,222 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:46,222 INFO L912 BasicCegarLoop]: 286 mSDtfsCounter, 188 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:46,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1502 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-18 05:22:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-18 05:22:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2022-03-18 05:22:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-18 05:22:46,266 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-18 05:22:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:46,266 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-18 05:22:46,266 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 05:22:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-18 05:22:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-18 05:22:46,266 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:46,267 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:46,267 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 05:22:46,267 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 1 times [2022-03-18 05:22:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:46,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [515162683] [2022-03-18 05:22:46,267 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 2 times [2022-03-18 05:22:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:46,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836440094] [2022-03-18 05:22:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:22:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:46,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:46,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836440094] [2022-03-18 05:22:46,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836440094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:46,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:46,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:46,420 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:46,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [515162683] [2022-03-18 05:22:46,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [515162683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:46,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:46,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213753358] [2022-03-18 05:22:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:46,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:22:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:22:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:46,420 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-03-18 05:22:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:47,407 INFO L93 Difference]: Finished difference Result 594 states and 812 transitions. [2022-03-18 05:22:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 05:22:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 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 48 [2022-03-18 05:22:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:47,410 INFO L225 Difference]: With dead ends: 594 [2022-03-18 05:22:47,410 INFO L226 Difference]: Without dead ends: 575 [2022-03-18 05:22:47,411 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:22:47,412 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 1048 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:47,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 700 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 05:22:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-18 05:22:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-18 05:22:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2022-03-18 05:22:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-18 05:22:47,458 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-18 05:22:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:47,458 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-18 05:22:47,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-03-18 05:22:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-18 05:22:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 05:22:47,460 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:47,460 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:47,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 05:22:47,460 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 1 times [2022-03-18 05:22:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:47,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1852975537] [2022-03-18 05:22:47,460 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 2 times [2022-03-18 05:22:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:47,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598403294] [2022-03-18 05:22:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:22:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598403294] [2022-03-18 05:22:47,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598403294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:47,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:47,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:47,601 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:47,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1852975537] [2022-03-18 05:22:47,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1852975537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:47,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:47,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393292294] [2022-03-18 05:22:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:47,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:47,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:47,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:47,602 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:48,209 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2022-03-18 05:22:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:48,210 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-03-18 05:22:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:48,216 INFO L225 Difference]: With dead ends: 458 [2022-03-18 05:22:48,216 INFO L226 Difference]: Without dead ends: 427 [2022-03-18 05:22:48,217 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:48,217 INFO L912 BasicCegarLoop]: 289 mSDtfsCounter, 231 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:48,219 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1515 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-18 05:22:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-18 05:22:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2022-03-18 05:22:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-18 05:22:48,279 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-18 05:22:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:48,279 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-18 05:22:48,279 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-18 05:22:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:48,280 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:48,280 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:48,280 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 05:22:48,280 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 1 times [2022-03-18 05:22:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1308769558] [2022-03-18 05:22:48,281 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 2 times [2022-03-18 05:22:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643752427] [2022-03-18 05:22:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 05:22:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:22:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643752427] [2022-03-18 05:22:48,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643752427] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:48,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:48,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:48,417 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1308769558] [2022-03-18 05:22:48,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1308769558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:48,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:48,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:48,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813401200] [2022-03-18 05:22:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:48,418 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:48,419 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:49,123 INFO L93 Difference]: Finished difference Result 456 states and 600 transitions. [2022-03-18 05:22:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:49,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-18 05:22:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:49,125 INFO L225 Difference]: With dead ends: 456 [2022-03-18 05:22:49,125 INFO L226 Difference]: Without dead ends: 423 [2022-03-18 05:22:49,126 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:49,126 INFO L912 BasicCegarLoop]: 271 mSDtfsCounter, 174 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:49,126 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1146 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-18 05:22:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-18 05:22:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2022-03-18 05:22:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-18 05:22:49,166 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-18 05:22:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:49,166 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-18 05:22:49,166 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-18 05:22:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:22:49,166 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:49,166 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:49,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 05:22:49,167 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 1 times [2022-03-18 05:22:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [360873954] [2022-03-18 05:22:49,167 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 2 times [2022-03-18 05:22:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100870412] [2022-03-18 05:22:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:49,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:49,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100870412] [2022-03-18 05:22:49,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100870412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:49,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:49,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:49,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:49,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [360873954] [2022-03-18 05:22:49,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [360873954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:49,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:49,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:22:49,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864950297] [2022-03-18 05:22:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:49,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:22:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:22:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:22:49,279 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:50,737 INFO L93 Difference]: Finished difference Result 634 states and 905 transitions. [2022-03-18 05:22:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:22:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-18 05:22:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:50,740 INFO L225 Difference]: With dead ends: 634 [2022-03-18 05:22:50,740 INFO L226 Difference]: Without dead ends: 600 [2022-03-18 05:22:50,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:22:50,741 INFO L912 BasicCegarLoop]: 415 mSDtfsCounter, 624 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:50,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1378 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 05:22:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-18 05:22:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-18 05:22:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 05:22:50,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-18 05:22:50,796 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-18 05:22:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:50,796 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-18 05:22:50,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-18 05:22:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:22:50,799 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:50,799 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:50,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 05:22:50,799 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 1 times [2022-03-18 05:22:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:50,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1414121515] [2022-03-18 05:22:50,800 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 2 times [2022-03-18 05:22:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423660715] [2022-03-18 05:22:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423660715] [2022-03-18 05:22:50,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423660715] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:50,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:50,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:50,933 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:50,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1414121515] [2022-03-18 05:22:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1414121515] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:50,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:50,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:22:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339720981] [2022-03-18 05:22:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:50,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:22:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:22:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:22:50,934 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:51,637 INFO L93 Difference]: Finished difference Result 587 states and 833 transitions. [2022-03-18 05:22:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-03-18 05:22:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:51,640 INFO L225 Difference]: With dead ends: 587 [2022-03-18 05:22:51,640 INFO L226 Difference]: Without dead ends: 555 [2022-03-18 05:22:51,640 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:22:51,640 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 616 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:51,640 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 730 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-18 05:22:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-18 05:22:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 402 states have (on average 1.3432835820895523) internal successors, (540), 413 states have internal predecessors, (540), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 05:22:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-18 05:22:51,700 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-18 05:22:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:51,700 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-18 05:22:51,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-18 05:22:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:22:51,700 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:51,701 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:51,701 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 05:22:51,701 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 1 times [2022-03-18 05:22:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:51,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1295120623] [2022-03-18 05:22:51,701 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 2 times [2022-03-18 05:22:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137521129] [2022-03-18 05:22:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:51,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137521129] [2022-03-18 05:22:51,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137521129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:51,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:51,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:51,826 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1295120623] [2022-03-18 05:22:51,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1295120623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:51,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:51,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:51,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159843398] [2022-03-18 05:22:51,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:51,827 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:51,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:51,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:51,827 INFO L87 Difference]: Start difference. First operand 537 states and 773 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:52,595 INFO L93 Difference]: Finished difference Result 670 states and 993 transitions. [2022-03-18 05:22:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:22:52,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-03-18 05:22:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:52,598 INFO L225 Difference]: With dead ends: 670 [2022-03-18 05:22:52,598 INFO L226 Difference]: Without dead ends: 624 [2022-03-18 05:22:52,598 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:22:52,599 INFO L912 BasicCegarLoop]: 291 mSDtfsCounter, 788 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:52,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1040 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-18 05:22:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-18 05:22:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3350253807106598) internal successors, (526), 405 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 05:22:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-18 05:22:52,665 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-18 05:22:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:52,666 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-18 05:22:52,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 05:22:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-18 05:22:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:22:52,668 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:52,668 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:52,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 05:22:52,668 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 1 times [2022-03-18 05:22:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:52,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1647987351] [2022-03-18 05:22:52,669 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 2 times [2022-03-18 05:22:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:52,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595718621] [2022-03-18 05:22:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:52,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595718621] [2022-03-18 05:22:52,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595718621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:52,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:52,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:22:52,782 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:52,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1647987351] [2022-03-18 05:22:52,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1647987351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:52,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:52,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:22:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22254946] [2022-03-18 05:22:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:52,783 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:22:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:22:52,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:22:52,783 INFO L87 Difference]: Start difference. First operand 529 states and 759 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:53,450 INFO L93 Difference]: Finished difference Result 714 states and 1095 transitions. [2022-03-18 05:22:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:22:53,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 05:22:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:53,464 INFO L225 Difference]: With dead ends: 714 [2022-03-18 05:22:53,465 INFO L226 Difference]: Without dead ends: 701 [2022-03-18 05:22:53,465 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:22:53,466 INFO L912 BasicCegarLoop]: 375 mSDtfsCounter, 367 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:53,466 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 716 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-18 05:22:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-18 05:22:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 05:22:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-18 05:22:53,535 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-18 05:22:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:53,535 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-18 05:22:53,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-18 05:22:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:22:53,536 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:53,536 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:53,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 05:22:53,536 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 1 times [2022-03-18 05:22:53,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:53,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [191088800] [2022-03-18 05:22:53,537 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 2 times [2022-03-18 05:22:53,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536305593] [2022-03-18 05:22:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:53,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536305593] [2022-03-18 05:22:53,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536305593] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:53,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:53,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:53,689 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:53,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [191088800] [2022-03-18 05:22:53,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [191088800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:53,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:53,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241256930] [2022-03-18 05:22:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:53,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:53,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:53,690 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:54,383 INFO L93 Difference]: Finished difference Result 547 states and 781 transitions. [2022-03-18 05:22:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:22:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-18 05:22:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:54,387 INFO L225 Difference]: With dead ends: 547 [2022-03-18 05:22:54,387 INFO L226 Difference]: Without dead ends: 543 [2022-03-18 05:22:54,388 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:54,388 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 76 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:54,388 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1341 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-18 05:22:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-18 05:22:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 05:22:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-18 05:22:54,467 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-18 05:22:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:54,468 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-18 05:22:54,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-18 05:22:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:22:54,468 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:54,468 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:54,468 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 05:22:54,468 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 1 times [2022-03-18 05:22:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:54,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1719733721] [2022-03-18 05:22:54,469 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 2 times [2022-03-18 05:22:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:54,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268133894] [2022-03-18 05:22:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:54,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:54,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268133894] [2022-03-18 05:22:54,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268133894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:54,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:54,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:54,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:54,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1719733721] [2022-03-18 05:22:54,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1719733721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:54,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:54,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:54,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363035769] [2022-03-18 05:22:54,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:54,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:54,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:54,617 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:55,104 INFO L93 Difference]: Finished difference Result 562 states and 797 transitions. [2022-03-18 05:22:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:22:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-18 05:22:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:55,106 INFO L225 Difference]: With dead ends: 562 [2022-03-18 05:22:55,106 INFO L226 Difference]: Without dead ends: 538 [2022-03-18 05:22:55,107 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:55,107 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:55,107 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1410 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 05:22:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-18 05:22:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-18 05:22:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 05:22:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-18 05:22:55,171 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-18 05:22:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:55,172 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-18 05:22:55,172 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 05:22:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-18 05:22:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 05:22:55,172 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:55,172 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:55,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 05:22:55,172 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 1 times [2022-03-18 05:22:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [470150853] [2022-03-18 05:22:55,173 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 2 times [2022-03-18 05:22:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575919098] [2022-03-18 05:22:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 05:22:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 05:22:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:55,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:55,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575919098] [2022-03-18 05:22:55,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575919098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:55,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:55,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:55,269 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:55,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [470150853] [2022-03-18 05:22:55,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [470150853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:55,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:55,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:22:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071215915] [2022-03-18 05:22:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:55,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:22:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:22:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:22:55,270 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:55,664 INFO L93 Difference]: Finished difference Result 955 states and 1439 transitions. [2022-03-18 05:22:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:22:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 05:22:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:55,667 INFO L225 Difference]: With dead ends: 955 [2022-03-18 05:22:55,668 INFO L226 Difference]: Without dead ends: 549 [2022-03-18 05:22:55,670 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:55,670 INFO L912 BasicCegarLoop]: 258 mSDtfsCounter, 298 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:55,671 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 652 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:22:55,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-18 05:22:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-18 05:22:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 05:22:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-18 05:22:55,738 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-18 05:22:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:55,738 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-18 05:22:55,738 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-18 05:22:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 05:22:55,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:55,738 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:55,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 05:22:55,739 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 1 times [2022-03-18 05:22:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [304797394] [2022-03-18 05:22:55,739 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 2 times [2022-03-18 05:22:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626223407] [2022-03-18 05:22:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:22:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:55,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:55,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626223407] [2022-03-18 05:22:55,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626223407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:55,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:55,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:55,874 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:55,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [304797394] [2022-03-18 05:22:55,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [304797394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:55,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:55,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:22:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20376095] [2022-03-18 05:22:55,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:55,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:22:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:22:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:22:55,874 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:56,615 INFO L93 Difference]: Finished difference Result 675 states and 1000 transitions. [2022-03-18 05:22:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-18 05:22:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:56,618 INFO L225 Difference]: With dead ends: 675 [2022-03-18 05:22:56,618 INFO L226 Difference]: Without dead ends: 639 [2022-03-18 05:22:56,618 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:56,619 INFO L912 BasicCegarLoop]: 323 mSDtfsCounter, 756 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:56,619 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 693 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-18 05:22:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-18 05:22:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2022-03-18 05:22:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-18 05:22:56,715 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-18 05:22:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:56,716 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-18 05:22:56,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 05:22:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-18 05:22:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:22:56,716 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:56,716 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:56,716 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 05:22:56,716 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 1 times [2022-03-18 05:22:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:56,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [411201070] [2022-03-18 05:22:56,717 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 2 times [2022-03-18 05:22:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:56,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631623086] [2022-03-18 05:22:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:22:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:56,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631623086] [2022-03-18 05:22:56,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631623086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:56,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:56,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:56,908 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:56,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [411201070] [2022-03-18 05:22:56,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [411201070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:56,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:56,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:22:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122822854] [2022-03-18 05:22:56,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:56,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:22:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:22:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:56,909 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:57,406 INFO L93 Difference]: Finished difference Result 856 states and 1268 transitions. [2022-03-18 05:22:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:22:57,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-03-18 05:22:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:57,409 INFO L225 Difference]: With dead ends: 856 [2022-03-18 05:22:57,409 INFO L226 Difference]: Without dead ends: 390 [2022-03-18 05:22:57,411 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:22:57,411 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 200 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:57,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1417 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 05:22:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-18 05:22:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-18 05:22:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-18 05:22:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-18 05:22:57,464 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-18 05:22:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:57,464 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-18 05:22:57,464 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-18 05:22:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 05:22:57,465 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:57,465 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:57,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-18 05:22:57,465 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 1 times [2022-03-18 05:22:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [369631109] [2022-03-18 05:22:57,466 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 2 times [2022-03-18 05:22:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890962244] [2022-03-18 05:22:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:22:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:57,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890962244] [2022-03-18 05:22:57,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890962244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:57,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:57,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:57,657 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:57,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [369631109] [2022-03-18 05:22:57,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [369631109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:57,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:57,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:22:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428995722] [2022-03-18 05:22:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:57,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:22:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:22:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:22:57,658 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:58,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:58,360 INFO L93 Difference]: Finished difference Result 346 states and 454 transitions. [2022-03-18 05:22:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 05:22:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:58,362 INFO L225 Difference]: With dead ends: 346 [2022-03-18 05:22:58,362 INFO L226 Difference]: Without dead ends: 304 [2022-03-18 05:22:58,362 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:22:58,362 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 155 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:58,362 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1486 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:22:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-18 05:22:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-18 05:22:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-18 05:22:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-18 05:22:58,422 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-18 05:22:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:58,423 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-18 05:22:58,423 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:22:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-18 05:22:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:22:58,423 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:58,423 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:58,424 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-18 05:22:58,424 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 1 times [2022-03-18 05:22:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1046342250] [2022-03-18 05:22:58,425 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 2 times [2022-03-18 05:22:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:58,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532462263] [2022-03-18 05:22:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:22:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:22:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532462263] [2022-03-18 05:22:58,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532462263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:58,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:58,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:58,587 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1046342250] [2022-03-18 05:22:58,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1046342250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:58,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:58,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293022227] [2022-03-18 05:22:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:58,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:58,588 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:59,312 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2022-03-18 05:22:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 05:22:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-18 05:22:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:59,314 INFO L225 Difference]: With dead ends: 576 [2022-03-18 05:22:59,314 INFO L226 Difference]: Without dead ends: 316 [2022-03-18 05:22:59,315 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:22:59,315 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 252 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:59,315 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 830 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:22:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-18 05:22:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-18 05:22:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-18 05:22:59,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-18 05:22:59,360 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-03-18 05:22:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:59,360 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-18 05:22:59,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:22:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-18 05:22:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:22:59,361 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:59,361 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:59,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 05:22:59,361 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 1 times [2022-03-18 05:22:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:59,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1721225514] [2022-03-18 05:22:59,362 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 2 times [2022-03-18 05:22:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:59,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580064426] [2022-03-18 05:22:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:22:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:22:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:22:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:22:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:22:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:22:59,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580064426] [2022-03-18 05:22:59,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580064426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:59,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:59,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:59,515 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:22:59,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1721225514] [2022-03-18 05:22:59,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1721225514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:22:59,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:22:59,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:22:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139507974] [2022-03-18 05:22:59,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:22:59,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:22:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:22:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:22:59,516 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:22:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:22:59,863 INFO L93 Difference]: Finished difference Result 591 states and 822 transitions. [2022-03-18 05:22:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:22:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 05:22:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:22:59,865 INFO L225 Difference]: With dead ends: 591 [2022-03-18 05:22:59,865 INFO L226 Difference]: Without dead ends: 330 [2022-03-18 05:22:59,866 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:22:59,866 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 183 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:22:59,866 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1025 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:22:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-18 05:22:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-18 05:22:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-18 05:22:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-18 05:22:59,911 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 69 [2022-03-18 05:22:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:22:59,911 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-18 05:22:59,911 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:22:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-18 05:22:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:22:59,911 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:22:59,911 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:22:59,912 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 05:22:59,912 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:22:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:22:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 1 times [2022-03-18 05:22:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:22:59,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1162811246] [2022-03-18 05:22:59,912 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:22:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 2 times [2022-03-18 05:22:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:22:59,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906304949] [2022-03-18 05:22:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:22:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:22:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:22:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:22:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:22:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:22:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:22:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:00,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906304949] [2022-03-18 05:23:00,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906304949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:00,017 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1162811246] [2022-03-18 05:23:00,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1162811246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521998146] [2022-03-18 05:23:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:00,017 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:00,018 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:00,383 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2022-03-18 05:23:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 05:23:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:00,386 INFO L225 Difference]: With dead ends: 477 [2022-03-18 05:23:00,386 INFO L226 Difference]: Without dead ends: 474 [2022-03-18 05:23:00,387 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:00,387 INFO L912 BasicCegarLoop]: 306 mSDtfsCounter, 283 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:00,387 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 755 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:23:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-18 05:23:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-18 05:23:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-18 05:23:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-18 05:23:00,437 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-03-18 05:23:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:00,438 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-18 05:23:00,438 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:23:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-18 05:23:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:23:00,438 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:00,438 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:00,438 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 05:23:00,438 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 1 times [2022-03-18 05:23:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1303730808] [2022-03-18 05:23:00,439 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 2 times [2022-03-18 05:23:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394254135] [2022-03-18 05:23:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:23:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394254135] [2022-03-18 05:23:00,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394254135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:00,577 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1303730808] [2022-03-18 05:23:00,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1303730808] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:00,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:00,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:23:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092492955] [2022-03-18 05:23:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:00,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:23:00,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:23:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:23:00,579 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:01,055 INFO L93 Difference]: Finished difference Result 793 states and 1161 transitions. [2022-03-18 05:23:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:01,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-18 05:23:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:01,059 INFO L225 Difference]: With dead ends: 793 [2022-03-18 05:23:01,059 INFO L226 Difference]: Without dead ends: 529 [2022-03-18 05:23:01,060 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:01,060 INFO L912 BasicCegarLoop]: 233 mSDtfsCounter, 493 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:01,061 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:23:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-18 05:23:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-18 05:23:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2022-03-18 05:23:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-18 05:23:01,138 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-03-18 05:23:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:01,139 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-18 05:23:01,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 05:23:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-18 05:23:01,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:23:01,139 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:01,139 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:01,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 05:23:01,140 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 1 times [2022-03-18 05:23:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1133014561] [2022-03-18 05:23:01,140 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 2 times [2022-03-18 05:23:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:01,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382031227] [2022-03-18 05:23:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:01,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:23:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382031227] [2022-03-18 05:23:01,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382031227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:01,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:01,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:01,330 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:01,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1133014561] [2022-03-18 05:23:01,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1133014561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:01,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:01,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 05:23:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947878859] [2022-03-18 05:23:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:01,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 05:23:01,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 05:23:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:23:01,331 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 05:23:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:01,793 INFO L93 Difference]: Finished difference Result 942 states and 1393 transitions. [2022-03-18 05:23:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:23:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-03-18 05:23:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:01,797 INFO L225 Difference]: With dead ends: 942 [2022-03-18 05:23:01,797 INFO L226 Difference]: Without dead ends: 493 [2022-03-18 05:23:01,798 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:23:01,799 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 107 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:01,799 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1126 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 05:23:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-18 05:23:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-18 05:23:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2022-03-18 05:23:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-18 05:23:01,875 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-18 05:23:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:01,876 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-18 05:23:01,876 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 05:23:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-18 05:23:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-18 05:23:01,876 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:01,876 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:01,876 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 05:23:01,876 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 1 times [2022-03-18 05:23:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:01,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2026017548] [2022-03-18 05:23:01,877 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 2 times [2022-03-18 05:23:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:01,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156033488] [2022-03-18 05:23:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:23:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:23:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:02,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156033488] [2022-03-18 05:23:02,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156033488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:02,030 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:02,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2026017548] [2022-03-18 05:23:02,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2026017548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 05:23:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442772978] [2022-03-18 05:23:02,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:02,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 05:23:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 05:23:02,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:23:02,031 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:23:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:02,493 INFO L93 Difference]: Finished difference Result 869 states and 1255 transitions. [2022-03-18 05:23:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:02,494 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-03-18 05:23:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:02,496 INFO L225 Difference]: With dead ends: 869 [2022-03-18 05:23:02,496 INFO L226 Difference]: Without dead ends: 450 [2022-03-18 05:23:02,498 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:23:02,498 INFO L912 BasicCegarLoop]: 313 mSDtfsCounter, 337 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:02,498 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 956 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:23:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-18 05:23:02,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-18 05:23:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-03-18 05:23:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-18 05:23:02,564 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-18 05:23:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:02,564 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-18 05:23:02,564 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:23:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-18 05:23:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-18 05:23:02,565 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:02,565 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:02,565 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 05:23:02,565 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 1 times [2022-03-18 05:23:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [126463974] [2022-03-18 05:23:02,566 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 2 times [2022-03-18 05:23:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119094520] [2022-03-18 05:23:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 05:23:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:02,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119094520] [2022-03-18 05:23:02,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119094520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:02,865 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [126463974] [2022-03-18 05:23:02,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [126463974] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:02,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:02,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:02,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868658522] [2022-03-18 05:23:02,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:02,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 05:23:02,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 05:23:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:23:02,866 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:23:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:03,500 INFO L93 Difference]: Finished difference Result 486 states and 681 transitions. [2022-03-18 05:23:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:23:03,501 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-03-18 05:23:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:03,502 INFO L225 Difference]: With dead ends: 486 [2022-03-18 05:23:03,503 INFO L226 Difference]: Without dead ends: 461 [2022-03-18 05:23:03,503 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:23:03,503 INFO L912 BasicCegarLoop]: 230 mSDtfsCounter, 147 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:03,503 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2598 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:23:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-18 05:23:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-18 05:23:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2022-03-18 05:23:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-18 05:23:03,577 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-18 05:23:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:03,578 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-18 05:23:03,578 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:23:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-18 05:23:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 05:23:03,579 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:03,579 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:03,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 05:23:03,579 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 1 times [2022-03-18 05:23:03,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1600475252] [2022-03-18 05:23:03,579 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 2 times [2022-03-18 05:23:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:03,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066475118] [2022-03-18 05:23:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066475118] [2022-03-18 05:23:03,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066475118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:03,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:03,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:03,885 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1600475252] [2022-03-18 05:23:03,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1600475252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:03,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:03,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96155558] [2022-03-18 05:23:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:03,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 05:23:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 05:23:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:23:03,886 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:23:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:04,605 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2022-03-18 05:23:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 05:23:04,605 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-03-18 05:23:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:04,607 INFO L225 Difference]: With dead ends: 484 [2022-03-18 05:23:04,607 INFO L226 Difference]: Without dead ends: 459 [2022-03-18 05:23:04,608 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:23:04,608 INFO L912 BasicCegarLoop]: 245 mSDtfsCounter, 121 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:04,608 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2822 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-18 05:23:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-18 05:23:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2022-03-18 05:23:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-18 05:23:04,701 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-18 05:23:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:04,701 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-18 05:23:04,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:23:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-18 05:23:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:23:04,702 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:04,702 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:04,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-18 05:23:04,702 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 1 times [2022-03-18 05:23:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [191498185] [2022-03-18 05:23:04,703 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 2 times [2022-03-18 05:23:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629535252] [2022-03-18 05:23:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:23:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 05:23:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:05,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:05,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629535252] [2022-03-18 05:23:05,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629535252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:05,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:05,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:05,021 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [191498185] [2022-03-18 05:23:05,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [191498185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:05,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:05,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 05:23:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428504578] [2022-03-18 05:23:05,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:05,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 05:23:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 05:23:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:23:05,023 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 05:23:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:06,373 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2022-03-18 05:23:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 05:23:06,374 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2022-03-18 05:23:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:06,375 INFO L225 Difference]: With dead ends: 470 [2022-03-18 05:23:06,375 INFO L226 Difference]: Without dead ends: 434 [2022-03-18 05:23:06,376 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 05:23:06,376 INFO L912 BasicCegarLoop]: 210 mSDtfsCounter, 395 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:06,377 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 810 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 05:23:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-18 05:23:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-18 05:23:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2022-03-18 05:23:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-18 05:23:06,456 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-18 05:23:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:06,457 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-18 05:23:06,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 05:23:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-18 05:23:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-18 05:23:06,458 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:06,458 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:06,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 05:23:06,458 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 1 times [2022-03-18 05:23:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [900246125] [2022-03-18 05:23:06,459 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 2 times [2022-03-18 05:23:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272976033] [2022-03-18 05:23:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 05:23:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 05:23:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 05:23:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272976033] [2022-03-18 05:23:06,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272976033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:06,845 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [900246125] [2022-03-18 05:23:06,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [900246125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:06,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:06,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687689253] [2022-03-18 05:23:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:06,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 05:23:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 05:23:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:23:06,846 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 05:23:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:07,882 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-03-18 05:23:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 05:23:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-03-18 05:23:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:07,885 INFO L225 Difference]: With dead ends: 481 [2022-03-18 05:23:07,885 INFO L226 Difference]: Without dead ends: 454 [2022-03-18 05:23:07,885 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 05:23:07,886 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 121 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:07,886 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 2146 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 05:23:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-18 05:23:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-18 05:23:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2022-03-18 05:23:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-18 05:23:07,956 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-18 05:23:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:07,956 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-18 05:23:07,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 05:23:07,956 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-18 05:23:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 05:23:07,957 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:07,957 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:07,957 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 05:23:07,957 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 1 times [2022-03-18 05:23:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:07,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [390215922] [2022-03-18 05:23:07,957 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 2 times [2022-03-18 05:23:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:07,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324411709] [2022-03-18 05:23:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 05:23:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 05:23:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:08,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:08,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324411709] [2022-03-18 05:23:08,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324411709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:08,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:08,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:08,303 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:08,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [390215922] [2022-03-18 05:23:08,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [390215922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:08,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:08,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654575237] [2022-03-18 05:23:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:08,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 05:23:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:08,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 05:23:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:23:08,304 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 05:23:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:09,134 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2022-03-18 05:23:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 05:23:09,134 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-03-18 05:23:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:09,136 INFO L225 Difference]: With dead ends: 483 [2022-03-18 05:23:09,136 INFO L226 Difference]: Without dead ends: 443 [2022-03-18 05:23:09,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 05:23:09,137 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 199 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:09,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 2543 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 05:23:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-18 05:23:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-18 05:23:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2022-03-18 05:23:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-18 05:23:09,206 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-18 05:23:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:09,206 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-18 05:23:09,206 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 05:23:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-18 05:23:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-18 05:23:09,207 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:09,207 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:09,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 05:23:09,207 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:09,207 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 1 times [2022-03-18 05:23:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1379057099] [2022-03-18 05:23:09,208 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 2 times [2022-03-18 05:23:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:09,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444459643] [2022-03-18 05:23:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-18 05:23:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:09,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444459643] [2022-03-18 05:23:09,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444459643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:23:09,387 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:09,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1379057099] [2022-03-18 05:23:09,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1379057099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:09,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:09,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:23:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271316261] [2022-03-18 05:23:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:09,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:23:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:23:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:23:09,389 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 05:23:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:09,962 INFO L93 Difference]: Finished difference Result 734 states and 984 transitions. [2022-03-18 05:23:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-03-18 05:23:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:09,964 INFO L225 Difference]: With dead ends: 734 [2022-03-18 05:23:09,964 INFO L226 Difference]: Without dead ends: 420 [2022-03-18 05:23:09,965 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:09,966 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 99 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:09,966 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1131 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 05:23:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-18 05:23:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-18 05:23:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2022-03-18 05:23:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-18 05:23:10,031 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-18 05:23:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:10,032 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-18 05:23:10,032 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 05:23:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-18 05:23:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 05:23:10,032 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:10,033 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:10,033 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-18 05:23:10,033 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 1 times [2022-03-18 05:23:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:10,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [3819113] [2022-03-18 05:23:10,035 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 2 times [2022-03-18 05:23:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:10,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508756240] [2022-03-18 05:23:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-18 05:23:10,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:10,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508756240] [2022-03-18 05:23:10,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508756240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:10,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:10,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:23:10,230 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [3819113] [2022-03-18 05:23:10,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [3819113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:10,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:10,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 05:23:10,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891048489] [2022-03-18 05:23:10,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:10,232 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 05:23:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 05:23:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:23:10,232 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 05:23:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:10,688 INFO L93 Difference]: Finished difference Result 592 states and 836 transitions. [2022-03-18 05:23:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 05:23:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-03-18 05:23:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:10,691 INFO L225 Difference]: With dead ends: 592 [2022-03-18 05:23:10,691 INFO L226 Difference]: Without dead ends: 547 [2022-03-18 05:23:10,691 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:10,692 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 217 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:10,692 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1249 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:23:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-18 05:23:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-18 05:23:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2022-03-18 05:23:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-18 05:23:10,758 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-18 05:23:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:10,758 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-18 05:23:10,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 05:23:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-18 05:23:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-18 05:23:10,759 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:10,759 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:10,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-18 05:23:10,760 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 1 times [2022-03-18 05:23:10,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:10,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1133527185] [2022-03-18 05:23:10,760 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 2 times [2022-03-18 05:23:10,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:10,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039035013] [2022-03-18 05:23:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:10,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 05:23:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:23:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 05:23:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 05:23:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 05:23:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:23:11,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:11,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039035013] [2022-03-18 05:23:11,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039035013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:11,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:11,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:11,118 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:11,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1133527185] [2022-03-18 05:23:11,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1133527185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:11,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:11,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 05:23:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672680789] [2022-03-18 05:23:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:11,118 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 05:23:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 05:23:11,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:23:11,119 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 05:23:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:12,373 INFO L93 Difference]: Finished difference Result 416 states and 551 transitions. [2022-03-18 05:23:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 05:23:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2022-03-18 05:23:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:12,375 INFO L225 Difference]: With dead ends: 416 [2022-03-18 05:23:12,375 INFO L226 Difference]: Without dead ends: 354 [2022-03-18 05:23:12,376 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-03-18 05:23:12,376 INFO L912 BasicCegarLoop]: 178 mSDtfsCounter, 476 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:12,376 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 481 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 05:23:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-18 05:23:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-18 05:23:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-18 05:23:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-18 05:23:12,448 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-18 05:23:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:12,449 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-18 05:23:12,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 05:23:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-18 05:23:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-18 05:23:12,452 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:12,452 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:12,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-18 05:23:12,452 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 1 times [2022-03-18 05:23:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:12,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1545359520] [2022-03-18 05:23:12,453 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 2 times [2022-03-18 05:23:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:12,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744139184] [2022-03-18 05:23:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 05:23:12,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:12,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744139184] [2022-03-18 05:23:12,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744139184] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:12,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227485989] [2022-03-18 05:23:12,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:12,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:12,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:12,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:12,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 05:23:12,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:12,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:12,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:23:12,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 05:23:13,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:13,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227485989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:13,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:13,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:13,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:13,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1545359520] [2022-03-18 05:23:13,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1545359520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:13,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:13,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137981836] [2022-03-18 05:23:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:13,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:13,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:13,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:13,100 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 05:23:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:13,213 INFO L93 Difference]: Finished difference Result 373 states and 477 transitions. [2022-03-18 05:23:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 163 [2022-03-18 05:23:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:13,214 INFO L225 Difference]: With dead ends: 373 [2022-03-18 05:23:13,215 INFO L226 Difference]: Without dead ends: 362 [2022-03-18 05:23:13,215 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:13,215 INFO L912 BasicCegarLoop]: 196 mSDtfsCounter, 14 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:13,216 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 934 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-18 05:23:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 343. [2022-03-18 05:23:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 257 states have internal predecessors, (297), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-18 05:23:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 438 transitions. [2022-03-18 05:23:13,278 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 438 transitions. Word has length 163 [2022-03-18 05:23:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:13,278 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 438 transitions. [2022-03-18 05:23:13,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 05:23:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 438 transitions. [2022-03-18 05:23:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-18 05:23:13,279 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:13,279 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:13,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:13,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:13,499 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 1 times [2022-03-18 05:23:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [788671348] [2022-03-18 05:23:13,500 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 2 times [2022-03-18 05:23:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004779650] [2022-03-18 05:23:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 05:23:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004779650] [2022-03-18 05:23:13,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004779650] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108459991] [2022-03-18 05:23:13,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:13,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:13,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:13,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 05:23:13,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:13,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:13,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:23:13,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 05:23:14,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:14,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108459991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:14,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:14,075 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:14,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [788671348] [2022-03-18 05:23:14,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [788671348] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:14,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:14,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525603554] [2022-03-18 05:23:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:14,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:14,077 INFO L87 Difference]: Start difference. First operand 343 states and 438 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 05:23:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:14,182 INFO L93 Difference]: Finished difference Result 611 states and 782 transitions. [2022-03-18 05:23:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 163 [2022-03-18 05:23:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:14,184 INFO L225 Difference]: With dead ends: 611 [2022-03-18 05:23:14,184 INFO L226 Difference]: Without dead ends: 398 [2022-03-18 05:23:14,185 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:14,185 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 30 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:14,185 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1038 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-03-18 05:23:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 325. [2022-03-18 05:23:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1554621848739495) internal successors, (275), 242 states have internal predecessors, (275), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-18 05:23:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 406 transitions. [2022-03-18 05:23:14,246 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 406 transitions. Word has length 163 [2022-03-18 05:23:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:14,246 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 406 transitions. [2022-03-18 05:23:14,246 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 05:23:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 406 transitions. [2022-03-18 05:23:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-03-18 05:23:14,247 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:14,248 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:14,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:14,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-18 05:23:14,466 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 1 times [2022-03-18 05:23:14,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:14,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [491599996] [2022-03-18 05:23:14,467 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 2 times [2022-03-18 05:23:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:14,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692015171] [2022-03-18 05:23:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 05:23:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 05:23:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:14,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:14,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692015171] [2022-03-18 05:23:14,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692015171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:14,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700318349] [2022-03-18 05:23:14,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:14,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:14,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:14,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:14,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 05:23:14,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:14,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:14,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:23:14,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:15,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:15,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700318349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:15,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:15,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:15,107 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:15,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [491599996] [2022-03-18 05:23:15,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [491599996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:15,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:15,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959403198] [2022-03-18 05:23:15,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:15,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:15,109 INFO L87 Difference]: Start difference. First operand 325 states and 406 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:15,205 INFO L93 Difference]: Finished difference Result 343 states and 425 transitions. [2022-03-18 05:23:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 203 [2022-03-18 05:23:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:15,207 INFO L225 Difference]: With dead ends: 343 [2022-03-18 05:23:15,207 INFO L226 Difference]: Without dead ends: 332 [2022-03-18 05:23:15,207 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:15,207 INFO L912 BasicCegarLoop]: 192 mSDtfsCounter, 8 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:15,207 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 918 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-18 05:23:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2022-03-18 05:23:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1470588235294117) internal successors, (273), 242 states have internal predecessors, (273), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-18 05:23:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 404 transitions. [2022-03-18 05:23:15,266 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 404 transitions. Word has length 203 [2022-03-18 05:23:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:15,267 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 404 transitions. [2022-03-18 05:23:15,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 404 transitions. [2022-03-18 05:23:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-18 05:23:15,268 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:15,268 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:15,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:15,476 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:15,477 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 1 times [2022-03-18 05:23:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:15,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2104876047] [2022-03-18 05:23:15,478 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 2 times [2022-03-18 05:23:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095627803] [2022-03-18 05:23:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 05:23:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 05:23:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:15,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095627803] [2022-03-18 05:23:15,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095627803] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:15,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139964505] [2022-03-18 05:23:15,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:15,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:15,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:15,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:15,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 05:23:15,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:15,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:23:15,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 05:23:16,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:16,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139964505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:16,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:16,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-18 05:23:16,076 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:16,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2104876047] [2022-03-18 05:23:16,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2104876047] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:16,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:16,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:23:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218904164] [2022-03-18 05:23:16,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:16,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:23:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:16,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:23:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:16,077 INFO L87 Difference]: Start difference. First operand 325 states and 404 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:16,149 INFO L93 Difference]: Finished difference Result 350 states and 436 transitions. [2022-03-18 05:23:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:23:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-18 05:23:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:16,151 INFO L225 Difference]: With dead ends: 350 [2022-03-18 05:23:16,151 INFO L226 Difference]: Without dead ends: 335 [2022-03-18 05:23:16,151 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:23:16,151 INFO L912 BasicCegarLoop]: 169 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:16,152 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 318 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-03-18 05:23:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2022-03-18 05:23:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 242 states have (on average 1.1446280991735538) internal successors, (277), 246 states have internal predecessors, (277), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-18 05:23:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 408 transitions. [2022-03-18 05:23:16,213 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 408 transitions. Word has length 206 [2022-03-18 05:23:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:16,213 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 408 transitions. [2022-03-18 05:23:16,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 408 transitions. [2022-03-18 05:23:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-18 05:23:16,214 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:16,215 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:16,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:16,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:16,421 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 1 times [2022-03-18 05:23:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [987945900] [2022-03-18 05:23:16,422 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 2 times [2022-03-18 05:23:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:16,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683897925] [2022-03-18 05:23:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 05:23:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 05:23:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:16,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:16,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683897925] [2022-03-18 05:23:16,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683897925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:16,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566999774] [2022-03-18 05:23:16,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:16,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:16,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:16,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 05:23:16,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:16,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:16,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:23:16,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:17,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:17,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566999774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:17,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:17,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [987945900] [2022-03-18 05:23:17,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [987945900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:17,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:17,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376538513] [2022-03-18 05:23:17,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:17,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:17,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:17,048 INFO L87 Difference]: Start difference. First operand 329 states and 408 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:17,135 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2022-03-18 05:23:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:17,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-18 05:23:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:17,137 INFO L225 Difference]: With dead ends: 346 [2022-03-18 05:23:17,137 INFO L226 Difference]: Without dead ends: 329 [2022-03-18 05:23:17,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:17,137 INFO L912 BasicCegarLoop]: 170 mSDtfsCounter, 9 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:17,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 825 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-18 05:23:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 325. [2022-03-18 05:23:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 238 states have (on average 1.1218487394957983) internal successors, (267), 242 states have internal predecessors, (267), 60 states have call successors, (60), 29 states have call predecessors, (60), 26 states have return successors, (71), 53 states have call predecessors, (71), 54 states have call successors, (71) [2022-03-18 05:23:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 398 transitions. [2022-03-18 05:23:17,199 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 398 transitions. Word has length 206 [2022-03-18 05:23:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:17,199 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 398 transitions. [2022-03-18 05:23:17,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 398 transitions. [2022-03-18 05:23:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-18 05:23:17,200 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:17,201 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:17,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:17,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-18 05:23:17,418 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 1 times [2022-03-18 05:23:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [528108567] [2022-03-18 05:23:17,419 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 2 times [2022-03-18 05:23:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008861522] [2022-03-18 05:23:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 05:23:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 05:23:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:17,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:17,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008861522] [2022-03-18 05:23:17,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008861522] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:17,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149967991] [2022-03-18 05:23:17,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:17,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:17,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 05:23:17,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:17,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:17,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:23:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:18,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:18,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149967991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:18,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:18,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:18,063 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [528108567] [2022-03-18 05:23:18,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [528108567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:18,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:18,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346528570] [2022-03-18 05:23:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:18,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:18,064 INFO L87 Difference]: Start difference. First operand 325 states and 398 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:18,230 INFO L93 Difference]: Finished difference Result 336 states and 409 transitions. [2022-03-18 05:23:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:18,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 206 [2022-03-18 05:23:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:18,232 INFO L225 Difference]: With dead ends: 336 [2022-03-18 05:23:18,232 INFO L226 Difference]: Without dead ends: 286 [2022-03-18 05:23:18,232 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:18,232 INFO L912 BasicCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:18,233 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 822 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-18 05:23:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-03-18 05:23:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 208 states have (on average 1.0961538461538463) internal successors, (228), 212 states have internal predecessors, (228), 50 states have call successors, (50), 29 states have call predecessors, (50), 26 states have return successors, (54), 43 states have call predecessors, (54), 42 states have call successors, (54) [2022-03-18 05:23:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 332 transitions. [2022-03-18 05:23:18,369 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 332 transitions. Word has length 206 [2022-03-18 05:23:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:18,369 INFO L478 AbstractCegarLoop]: Abstraction has 285 states and 332 transitions. [2022-03-18 05:23:18,369 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 05:23:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 332 transitions. [2022-03-18 05:23:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-03-18 05:23:18,370 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:23:18,370 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:23:18,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:18,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:18,583 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:23:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:23:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 1 times [2022-03-18 05:23:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:18,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [532223700] [2022-03-18 05:23:18,584 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:23:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 2 times [2022-03-18 05:23:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:23:18,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761782090] [2022-03-18 05:23:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:23:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:23:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:23:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:23:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 05:23:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:23:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:23:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:23:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:23:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 05:23:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:23:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 05:23:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 05:23:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 05:23:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:23:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:23:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:23:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 05:23:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:23:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-03-18 05:23:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:23:18,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761782090] [2022-03-18 05:23:18,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761782090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:23:18,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850727448] [2022-03-18 05:23:18,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:23:18,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:18,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:23:18,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 05:23:18,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 05:23:18,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:23:18,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:23:18,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:23:18,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:23:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-03-18 05:23:19,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:23:19,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850727448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:23:19,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-03-18 05:23:19,188 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:23:19,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [532223700] [2022-03-18 05:23:19,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [532223700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:23:19,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:23:19,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:23:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766760972] [2022-03-18 05:23:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:23:19,188 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:23:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:23:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:23:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:23:19,189 INFO L87 Difference]: Start difference. First operand 285 states and 332 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-18 05:23:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:23:19,247 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2022-03-18 05:23:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:23:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 211 [2022-03-18 05:23:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:23:19,251 INFO L225 Difference]: With dead ends: 287 [2022-03-18 05:23:19,251 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 05:23:19,253 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-18 05:23:19,254 INFO L912 BasicCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:23:19,254 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 692 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:23:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 05:23:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 05:23:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 05:23:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 05:23:19,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-03-18 05:23:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:23:19,255 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 05:23:19,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-18 05:23:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 05:23:19,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 05:23:19,257 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 05:23:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 05:23:19,477 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:23:19,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 05:24:53,689 WARN L232 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 176 DAG size of output: 169 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:25:11,233 WARN L232 SmtUtils]: Spent 17.54s on a formula simplification. DAG size of input: 171 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:26:45,474 WARN L232 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 176 DAG size of output: 169 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:27:03,049 WARN L232 SmtUtils]: Spent 17.57s on a formula simplification. DAG size of input: 171 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:28:19,575 WARN L232 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 170 DAG size of output: 165 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:28:37,103 WARN L232 SmtUtils]: Spent 17.52s on a formula simplification. DAG size of input: 171 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:28:54,648 WARN L232 SmtUtils]: Spent 17.54s on a formula simplification. DAG size of input: 171 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:30:28,821 WARN L232 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 176 DAG size of output: 169 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:34:52,315 WARN L232 SmtUtils]: Spent 4.39m on a formula simplification. DAG size of input: 173 DAG size of output: 168 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:36:17,206 WARN L232 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 171 DAG size of output: 166 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:36:32,065 WARN L232 SmtUtils]: Spent 14.86s on a formula simplification. DAG size of input: 166 DAG size of output: 161 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-18 05:36:49,531 WARN L232 SmtUtils]: Spent 17.47s on a formula simplification. DAG size of input: 171 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)