/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-34549b5 [2022-04-07 00:44:07,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:44:07,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:44:07,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 00:44:07,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 00:44:07,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 00:44:07,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 00:44:07,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 00:44:07,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 00:44:07,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 00:44:07,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 00:44:07,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 00:44:07,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 00:44:07,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 00:44:07,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 00:44:07,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 00:44:07,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 00:44:07,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 00:44:07,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 00:44:07,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 00:44:07,735 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 00:44:07,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 00:44:07,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 00:44:07,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 00:44:07,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 00:44:07,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 00:44:07,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:44:07,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:44:07,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:44:07,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:44:07,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:44:07,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:44:07,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:44:07,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:44:07,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:44:07,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:44:07,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:44:07,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:44:07,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:44:07,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:44:07,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:44:07,770 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:44:07,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:44:07,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:44:08,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:44:08,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:44:08,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:44:08,014 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:44:08,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-04-07 00:44:08,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169aa1036/304b877c123a4167bd10f9d8da3110cd/FLAGcac111c9f [2022-04-07 00:44:08,465 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:44:08,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-04-07 00:44:08,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169aa1036/304b877c123a4167bd10f9d8da3110cd/FLAGcac111c9f [2022-04-07 00:44:08,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169aa1036/304b877c123a4167bd10f9d8da3110cd [2022-04-07 00:44:08,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:44:08,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:44:08,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:44:08,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:44:08,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:44:08,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:44:08" (1/1) ... [2022-04-07 00:44:08,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138dd9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:08, skipping insertion in model container [2022-04-07 00:44:08,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:44:08" (1/1) ... [2022-04-07 00:44:08,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:44:08,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:44:09,049 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] [2022-04-07 00:44:09,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:44:09,141 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:44:09,150 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] [2022-04-07 00:44:09,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:44:09,221 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:44:09,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09 WrapperNode [2022-04-07 00:44:09,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:44:09,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:44:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:44:09,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:44:09,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:44:09,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:44:09,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:44:09,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:44:09,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (1/1) ... [2022-04-07 00:44:09,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:44:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:09,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-07 00:44:09,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-07 00:44:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:44:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:44:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-04-07 00:44:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 00:44:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 00:44:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-07 00:44:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:44:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-04-07 00:44:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:44:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 00:44:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:44:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:44:09,515 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:44:09,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:44:09,589 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:09,695 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-04-07 00:44:09,695 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-04-07 00:44:09,703 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:09,759 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 00:44:09,759 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 00:44:09,774 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:09,793 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 00:44:09,794 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 00:44:09,800 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:09,813 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:44:09,814 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:44:10,008 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:10,048 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-07 00:44:10,048 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-07 00:44:10,070 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:44:10,081 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-07 00:44:10,081 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-07 00:44:10,127 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:44:10,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:44:10,160 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 00:44:10,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:44:10 BoogieIcfgContainer [2022-04-07 00:44:10,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:44:10,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:44:10,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:44:10,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:44:10,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:44:08" (1/3) ... [2022-04-07 00:44:10,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb02a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:44:10, skipping insertion in model container [2022-04-07 00:44:10,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:44:09" (2/3) ... [2022-04-07 00:44:10,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb02a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:44:10, skipping insertion in model container [2022-04-07 00:44:10,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:44:10" (3/3) ... [2022-04-07 00:44:10,171 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2022-04-07 00:44:10,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:44:10,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:44:10,214 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:44:10,220 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 [2022-04-07 00:44:10,220 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:44:10,235 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) [2022-04-07 00:44:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 00:44:10,241 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:10,242 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:10,242 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 1 times [2022-04-07 00:44:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [981097642] [2022-04-07 00:44:10,261 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 717651403, now seen corresponding path program 2 times [2022-04-07 00:44:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:10,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308911244] [2022-04-07 00:44:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308911244] [2022-04-07 00:44:10,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308911244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:10,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:10,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:44:10,644 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:10,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [981097642] [2022-04-07 00:44:10,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [981097642] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:10,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:10,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:44:10,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111996371] [2022-04-07 00:44:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:10,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 00:44:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 00:44:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:44:10,679 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) [2022-04-07 00:44:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:11,562 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-04-07 00:44:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:11,564 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 [2022-04-07 00:44:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:11,585 INFO L225 Difference]: With dead ends: 576 [2022-04-07 00:44:11,585 INFO L226 Difference]: Without dead ends: 326 [2022-04-07 00:44:11,593 INFO L912 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 [2022-04-07 00:44:11,597 INFO L913 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:11,599 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-04-07 00:44:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-04-07 00:44:11,671 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) [2022-04-07 00:44:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-04-07 00:44:11,675 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-04-07 00:44:11,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:11,675 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-04-07 00:44:11,676 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) [2022-04-07 00:44:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-04-07 00:44:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-07 00:44:11,677 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:11,677 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:11,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:44:11,678 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 1 times [2022-04-07 00:44:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:11,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1380235032] [2022-04-07 00:44:11,679 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash -524387518, now seen corresponding path program 2 times [2022-04-07 00:44:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:11,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265604154] [2022-04-07 00:44:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:11,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:11,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265604154] [2022-04-07 00:44:11,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265604154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:11,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:11,860 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1380235032] [2022-04-07 00:44:11,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1380235032] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:11,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:11,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139150126] [2022-04-07 00:44:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:11,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:11,862 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) [2022-04-07 00:44:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:12,804 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2022-04-07 00:44:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-04-07 00:44:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:12,808 INFO L225 Difference]: With dead ends: 690 [2022-04-07 00:44:12,808 INFO L226 Difference]: Without dead ends: 507 [2022-04-07 00:44:12,809 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:12,810 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 573 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:12,810 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 682 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-04-07 00:44:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-04-07 00:44:12,863 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) [2022-04-07 00:44:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-04-07 00:44:12,866 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-04-07 00:44:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:12,866 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-04-07 00:44:12,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:44:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-04-07 00:44:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-07 00:44:12,867 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:12,867 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:12,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:44:12,868 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 1 times [2022-04-07 00:44:12,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [733592823] [2022-04-07 00:44:12,868 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1283608137, now seen corresponding path program 2 times [2022-04-07 00:44:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:12,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200724380] [2022-04-07 00:44:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200724380] [2022-04-07 00:44:13,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200724380] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:13,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:13,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:13,042 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [733592823] [2022-04-07 00:44:13,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [733592823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:13,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:13,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626647798] [2022-04-07 00:44:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:13,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:13,045 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) [2022-04-07 00:44:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:13,804 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2022-04-07 00:44:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:13,804 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 [2022-04-07 00:44:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:13,811 INFO L225 Difference]: With dead ends: 1013 [2022-04-07 00:44:13,812 INFO L226 Difference]: Without dead ends: 690 [2022-04-07 00:44:13,817 INFO L912 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 [2022-04-07 00:44:13,819 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:13,823 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 586 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-04-07 00:44:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-04-07 00:44:13,873 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) [2022-04-07 00:44:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-04-07 00:44:13,879 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-04-07 00:44:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:13,879 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-04-07 00:44:13,879 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) [2022-04-07 00:44:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-04-07 00:44:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-07 00:44:13,884 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:13,885 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:13,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:44:13,886 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 1 times [2022-04-07 00:44:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:13,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1142999954] [2022-04-07 00:44:13,889 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1553760270, now seen corresponding path program 2 times [2022-04-07 00:44:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120483864] [2022-04-07 00:44:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:14,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120483864] [2022-04-07 00:44:14,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120483864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:14,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:14,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:14,010 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:14,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1142999954] [2022-04-07 00:44:14,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1142999954] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:14,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:14,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864166556] [2022-04-07 00:44:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:14,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:14,011 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) [2022-04-07 00:44:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:14,876 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2022-04-07 00:44:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:14,877 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 [2022-04-07 00:44:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:14,881 INFO L225 Difference]: With dead ends: 665 [2022-04-07 00:44:14,881 INFO L226 Difference]: Without dead ends: 661 [2022-04-07 00:44:14,882 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:44:14,883 INFO L913 BasicCegarLoop]: 340 mSDtfsCounter, 126 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:14,883 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 590 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-04-07 00:44:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-04-07 00:44:14,924 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) [2022-04-07 00:44:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-04-07 00:44:14,929 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-04-07 00:44:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:14,929 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-04-07 00:44:14,929 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) [2022-04-07 00:44:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-04-07 00:44:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-07 00:44:14,931 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:14,931 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:14,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:44:14,931 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 1 times [2022-04-07 00:44:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [18295226] [2022-04-07 00:44:14,932 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1988078361, now seen corresponding path program 2 times [2022-04-07 00:44:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968408360] [2022-04-07 00:44:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968408360] [2022-04-07 00:44:15,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968408360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:15,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:15,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:15,132 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [18295226] [2022-04-07 00:44:15,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [18295226] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:15,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:15,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503907998] [2022-04-07 00:44:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:15,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:15,133 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) [2022-04-07 00:44:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:16,351 INFO L93 Difference]: Finished difference Result 716 states and 1015 transitions. [2022-04-07 00:44:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:16,352 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 [2022-04-07 00:44:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:16,356 INFO L225 Difference]: With dead ends: 716 [2022-04-07 00:44:16,357 INFO L226 Difference]: Without dead ends: 705 [2022-04-07 00:44:16,357 INFO L912 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 [2022-04-07 00:44:16,358 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 1044 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:16,358 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 750 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-07 00:44:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-04-07 00:44:16,431 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) [2022-04-07 00:44:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-04-07 00:44:16,436 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-04-07 00:44:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:16,438 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-04-07 00:44:16,439 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) [2022-04-07 00:44:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-04-07 00:44:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-07 00:44:16,440 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:16,440 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:16,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:44:16,441 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 1 times [2022-04-07 00:44:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:16,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1100288752] [2022-04-07 00:44:16,441 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1064338611, now seen corresponding path program 2 times [2022-04-07 00:44:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:16,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444178668] [2022-04-07 00:44:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:16,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444178668] [2022-04-07 00:44:16,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444178668] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:16,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:16,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:16,652 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1100288752] [2022-04-07 00:44:16,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1100288752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:16,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:16,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77534559] [2022-04-07 00:44:16,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:16,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:16,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:16,653 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) [2022-04-07 00:44:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:17,770 INFO L93 Difference]: Finished difference Result 713 states and 1008 transitions. [2022-04-07 00:44:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-04-07 00:44:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:17,774 INFO L225 Difference]: With dead ends: 713 [2022-04-07 00:44:17,775 INFO L226 Difference]: Without dead ends: 705 [2022-04-07 00:44:17,775 INFO L912 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 [2022-04-07 00:44:17,776 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 787 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:17,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 653 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-07 00:44:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-04-07 00:44:17,842 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) [2022-04-07 00:44:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-04-07 00:44:17,847 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-04-07 00:44:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:17,848 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-04-07 00:44:17,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-04-07 00:44:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-07 00:44:17,849 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:17,849 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:17,849 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:44:17,849 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 1 times [2022-04-07 00:44:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1886141105] [2022-04-07 00:44:17,850 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1632785520, now seen corresponding path program 2 times [2022-04-07 00:44:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558840816] [2022-04-07 00:44:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:17,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558840816] [2022-04-07 00:44:17,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558840816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:17,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:17,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:17,983 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1886141105] [2022-04-07 00:44:17,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1886141105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:17,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:17,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900551416] [2022-04-07 00:44:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:17,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:17,985 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) [2022-04-07 00:44:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:19,093 INFO L93 Difference]: Finished difference Result 1215 states and 1783 transitions. [2022-04-07 00:44:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:44:19,094 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 [2022-04-07 00:44:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:19,099 INFO L225 Difference]: With dead ends: 1215 [2022-04-07 00:44:19,099 INFO L226 Difference]: Without dead ends: 1186 [2022-04-07 00:44:19,100 INFO L912 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 [2022-04-07 00:44:19,101 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 995 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:19,101 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 798 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-04-07 00:44:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-04-07 00:44:19,178 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) [2022-04-07 00:44:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-04-07 00:44:19,184 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-04-07 00:44:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:19,184 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-04-07 00:44:19,185 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) [2022-04-07 00:44:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-04-07 00:44:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-07 00:44:19,185 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:19,185 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:19,185 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-07 00:44:19,186 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 1 times [2022-04-07 00:44:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:19,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [229111727] [2022-04-07 00:44:19,186 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash 931290683, now seen corresponding path program 2 times [2022-04-07 00:44:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:19,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772408573] [2022-04-07 00:44:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:44:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772408573] [2022-04-07 00:44:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772408573] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:19,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:19,319 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:19,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [229111727] [2022-04-07 00:44:19,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [229111727] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:19,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:19,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637512862] [2022-04-07 00:44:19,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:19,319 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:19,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:19,320 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) [2022-04-07 00:44:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:19,932 INFO L93 Difference]: Finished difference Result 1170 states and 1724 transitions. [2022-04-07 00:44:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:44:19,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-04-07 00:44:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:19,943 INFO L225 Difference]: With dead ends: 1170 [2022-04-07 00:44:19,943 INFO L226 Difference]: Without dead ends: 1148 [2022-04-07 00:44:19,946 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:19,946 INFO L913 BasicCegarLoop]: 327 mSDtfsCounter, 458 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:19,947 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1017 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-04-07 00:44:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-04-07 00:44:20,060 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) [2022-04-07 00:44:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-04-07 00:44:20,067 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-04-07 00:44:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:20,067 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-04-07 00:44:20,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-04-07 00:44:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-07 00:44:20,069 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:20,069 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:20,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-07 00:44:20,069 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 1 times [2022-04-07 00:44:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:20,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [983231839] [2022-04-07 00:44:20,071 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1303038604, now seen corresponding path program 2 times [2022-04-07 00:44:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:20,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049791709] [2022-04-07 00:44:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:20,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:20,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:20,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049791709] [2022-04-07 00:44:20,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049791709] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:20,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:20,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:20,234 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:20,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [983231839] [2022-04-07 00:44:20,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [983231839] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:20,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:20,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857538787] [2022-04-07 00:44:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:20,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:44:20,236 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) [2022-04-07 00:44:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:21,040 INFO L93 Difference]: Finished difference Result 1507 states and 2275 transitions. [2022-04-07 00:44:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:21,041 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 [2022-04-07 00:44:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:21,045 INFO L225 Difference]: With dead ends: 1507 [2022-04-07 00:44:21,045 INFO L226 Difference]: Without dead ends: 599 [2022-04-07 00:44:21,051 INFO L912 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 [2022-04-07 00:44:21,051 INFO L913 BasicCegarLoop]: 281 mSDtfsCounter, 370 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:21,051 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 340 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-04-07 00:44:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-04-07 00:44:21,109 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) [2022-04-07 00:44:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-04-07 00:44:21,113 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-04-07 00:44:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:21,113 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-04-07 00:44:21,113 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) [2022-04-07 00:44:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-04-07 00:44:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-07 00:44:21,114 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:21,114 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:21,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-07 00:44:21,115 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 1 times [2022-04-07 00:44:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:21,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [718772931] [2022-04-07 00:44:21,116 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -66301101, now seen corresponding path program 2 times [2022-04-07 00:44:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:21,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099605648] [2022-04-07 00:44:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:21,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099605648] [2022-04-07 00:44:21,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099605648] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:21,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:21,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:21,297 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:21,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [718772931] [2022-04-07 00:44:21,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [718772931] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:21,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:21,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400143881] [2022-04-07 00:44:21,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:21,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:21,299 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) [2022-04-07 00:44:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:22,399 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2022-04-07 00:44:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:22,400 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 [2022-04-07 00:44:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:22,404 INFO L225 Difference]: With dead ends: 633 [2022-04-07 00:44:22,404 INFO L226 Difference]: Without dead ends: 608 [2022-04-07 00:44:22,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:22,405 INFO L913 BasicCegarLoop]: 293 mSDtfsCounter, 112 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:22,406 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1206 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-04-07 00:44:22,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-04-07 00:44:22,467 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) [2022-04-07 00:44:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-04-07 00:44:22,471 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-04-07 00:44:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:22,471 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-04-07 00:44:22,471 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) [2022-04-07 00:44:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-04-07 00:44:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-07 00:44:22,472 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:22,472 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:22,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-07 00:44:22,473 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 1 times [2022-04-07 00:44:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:22,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2137236028] [2022-04-07 00:44:22,474 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -12862173, now seen corresponding path program 2 times [2022-04-07 00:44:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:22,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679077457] [2022-04-07 00:44:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679077457] [2022-04-07 00:44:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679077457] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:22,656 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:22,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2137236028] [2022-04-07 00:44:22,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2137236028] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:22,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:22,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279240691] [2022-04-07 00:44:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:22,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:22,657 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) [2022-04-07 00:44:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:23,714 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2022-04-07 00:44:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:44:23,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-04-07 00:44:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:23,723 INFO L225 Difference]: With dead ends: 834 [2022-04-07 00:44:23,723 INFO L226 Difference]: Without dead ends: 826 [2022-04-07 00:44:23,724 INFO L912 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 [2022-04-07 00:44:23,725 INFO L913 BasicCegarLoop]: 324 mSDtfsCounter, 498 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:23,725 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 703 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:44:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-04-07 00:44:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-04-07 00:44:23,803 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) [2022-04-07 00:44:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-04-07 00:44:23,811 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-04-07 00:44:23,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:23,811 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-04-07 00:44:23,811 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 00:44:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-04-07 00:44:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 00:44:23,813 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:23,813 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:23,813 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-07 00:44:23,813 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:23,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 1 times [2022-04-07 00:44:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:23,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1399609134] [2022-04-07 00:44:23,814 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1099213797, now seen corresponding path program 2 times [2022-04-07 00:44:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:23,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228038331] [2022-04-07 00:44:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:23,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 00:44:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:23,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:23,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228038331] [2022-04-07 00:44:23,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228038331] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:23,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:23,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:23,954 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:23,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1399609134] [2022-04-07 00:44:23,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1399609134] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:23,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:23,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:23,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526160074] [2022-04-07 00:44:23,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:23,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:23,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:23,955 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) [2022-04-07 00:44:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:24,715 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2022-04-07 00:44:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:24,716 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 [2022-04-07 00:44:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:24,718 INFO L225 Difference]: With dead ends: 739 [2022-04-07 00:44:24,718 INFO L226 Difference]: Without dead ends: 462 [2022-04-07 00:44:24,720 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:24,720 INFO L913 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 [2022-04-07 00:44:24,721 INFO L914 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] [2022-04-07 00:44:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-04-07 00:44:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-04-07 00:44:24,773 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) [2022-04-07 00:44:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-04-07 00:44:24,775 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 50 [2022-04-07 00:44:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:24,775 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-04-07 00:44:24,776 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) [2022-04-07 00:44:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-04-07 00:44:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-07 00:44:24,776 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:24,777 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:24,777 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-07 00:44:24,777 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 1 times [2022-04-07 00:44:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:24,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1777913337] [2022-04-07 00:44:24,778 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash 54275897, now seen corresponding path program 2 times [2022-04-07 00:44:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067696969] [2022-04-07 00:44:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:24,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067696969] [2022-04-07 00:44:24,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067696969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:24,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:24,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:24,937 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1777913337] [2022-04-07 00:44:24,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1777913337] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:24,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:24,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767144795] [2022-04-07 00:44:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:24,937 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:24,938 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) [2022-04-07 00:44:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:26,056 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2022-04-07 00:44:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:26,056 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 [2022-04-07 00:44:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:26,059 INFO L225 Difference]: With dead ends: 457 [2022-04-07 00:44:26,059 INFO L226 Difference]: Without dead ends: 453 [2022-04-07 00:44:26,059 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:26,071 INFO L913 BasicCegarLoop]: 284 mSDtfsCounter, 91 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:26,072 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1490 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:44:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-04-07 00:44:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-04-07 00:44:26,160 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) [2022-04-07 00:44:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-04-07 00:44:26,162 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-04-07 00:44:26,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:26,163 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-04-07 00:44:26,163 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) [2022-04-07 00:44:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-04-07 00:44:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-07 00:44:26,164 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:26,164 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:26,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-07 00:44:26,165 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 1 times [2022-04-07 00:44:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [699066360] [2022-04-07 00:44:26,165 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 53999067, now seen corresponding path program 2 times [2022-04-07 00:44:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853461888] [2022-04-07 00:44:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853461888] [2022-04-07 00:44:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853461888] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:26,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:26,376 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [699066360] [2022-04-07 00:44:26,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [699066360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872459636] [2022-04-07 00:44:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:26,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:26,377 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) [2022-04-07 00:44:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:27,233 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2022-04-07 00:44:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:27,233 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 [2022-04-07 00:44:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:27,236 INFO L225 Difference]: With dead ends: 780 [2022-04-07 00:44:27,236 INFO L226 Difference]: Without dead ends: 472 [2022-04-07 00:44:27,238 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:44:27,239 INFO L913 BasicCegarLoop]: 286 mSDtfsCounter, 188 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:27,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1497 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-04-07 00:44:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-04-07 00:44:27,297 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) [2022-04-07 00:44:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-04-07 00:44:27,298 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-04-07 00:44:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:27,299 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-04-07 00:44:27,299 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) [2022-04-07 00:44:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-04-07 00:44:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-07 00:44:27,300 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:27,300 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:27,300 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-07 00:44:27,300 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 1 times [2022-04-07 00:44:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:27,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2074756067] [2022-04-07 00:44:27,301 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1706472498, now seen corresponding path program 2 times [2022-04-07 00:44:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045514019] [2022-04-07 00:44:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045514019] [2022-04-07 00:44:27,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045514019] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:27,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:27,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:27,457 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2074756067] [2022-04-07 00:44:27,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2074756067] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:27,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:27,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863994720] [2022-04-07 00:44:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:27,458 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:27,458 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) [2022-04-07 00:44:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:28,423 INFO L93 Difference]: Finished difference Result 594 states and 812 transitions. [2022-04-07 00:44:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 00:44:28,423 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 [2022-04-07 00:44:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:28,426 INFO L225 Difference]: With dead ends: 594 [2022-04-07 00:44:28,426 INFO L226 Difference]: Without dead ends: 575 [2022-04-07 00:44:28,426 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:44:28,427 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:28,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 700 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-04-07 00:44:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-04-07 00:44:28,472 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) [2022-04-07 00:44:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-04-07 00:44:28,473 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-04-07 00:44:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:28,473 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-04-07 00:44:28,473 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) [2022-04-07 00:44:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-04-07 00:44:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-07 00:44:28,474 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:28,474 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:28,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-07 00:44:28,474 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 1 times [2022-04-07 00:44:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:28,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1305928954] [2022-04-07 00:44:28,475 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash 537684808, now seen corresponding path program 2 times [2022-04-07 00:44:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:28,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049136623] [2022-04-07 00:44:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 00:44:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:28,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049136623] [2022-04-07 00:44:28,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049136623] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:28,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:28,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:28,610 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1305928954] [2022-04-07 00:44:28,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1305928954] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:28,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:28,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305536563] [2022-04-07 00:44:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:28,611 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:28,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:28,612 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) [2022-04-07 00:44:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:29,303 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2022-04-07 00:44:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:29,304 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 [2022-04-07 00:44:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:29,306 INFO L225 Difference]: With dead ends: 458 [2022-04-07 00:44:29,306 INFO L226 Difference]: Without dead ends: 427 [2022-04-07 00:44:29,307 INFO L912 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 [2022-04-07 00:44:29,307 INFO L913 BasicCegarLoop]: 289 mSDtfsCounter, 231 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:29,308 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1515 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-04-07 00:44:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-04-07 00:44:29,374 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) [2022-04-07 00:44:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-04-07 00:44:29,375 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-04-07 00:44:29,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:29,375 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-04-07 00:44:29,375 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) [2022-04-07 00:44:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-04-07 00:44:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 00:44:29,376 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:29,376 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:29,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-07 00:44:29,376 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 1 times [2022-04-07 00:44:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:29,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [473781109] [2022-04-07 00:44:29,377 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1134618754, now seen corresponding path program 2 times [2022-04-07 00:44:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:29,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798169983] [2022-04-07 00:44:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:44:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:44:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:29,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798169983] [2022-04-07 00:44:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798169983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:29,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:29,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:29,519 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [473781109] [2022-04-07 00:44:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [473781109] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:29,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:29,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:29,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884470029] [2022-04-07 00:44:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:29,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:29,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:29,520 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) [2022-04-07 00:44:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:30,309 INFO L93 Difference]: Finished difference Result 456 states and 600 transitions. [2022-04-07 00:44:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:30,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-04-07 00:44:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:30,311 INFO L225 Difference]: With dead ends: 456 [2022-04-07 00:44:30,311 INFO L226 Difference]: Without dead ends: 423 [2022-04-07 00:44:30,311 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:44:30,312 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 174 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:30,312 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1145 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-04-07 00:44:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-04-07 00:44:30,390 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) [2022-04-07 00:44:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-04-07 00:44:30,391 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-04-07 00:44:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:30,392 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-04-07 00:44:30,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:44:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-04-07 00:44:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 00:44:30,393 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:30,393 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:30,393 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-07 00:44:30,393 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:30,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 1 times [2022-04-07 00:44:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2004541930] [2022-04-07 00:44:30,394 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1095396871, now seen corresponding path program 2 times [2022-04-07 00:44:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724845499] [2022-04-07 00:44:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:30,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724845499] [2022-04-07 00:44:30,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724845499] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:30,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:30,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:30,562 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2004541930] [2022-04-07 00:44:30,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2004541930] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:30,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:30,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:44:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510229999] [2022-04-07 00:44:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:30,563 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:44:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:44:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:44:30,564 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) [2022-04-07 00:44:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:32,141 INFO L93 Difference]: Finished difference Result 634 states and 905 transitions. [2022-04-07 00:44:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:44:32,153 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 [2022-04-07 00:44:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:32,156 INFO L225 Difference]: With dead ends: 634 [2022-04-07 00:44:32,157 INFO L226 Difference]: Without dead ends: 600 [2022-04-07 00:44:32,157 INFO L912 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 [2022-04-07 00:44:32,158 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 622 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:32,158 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1383 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-07 00:44:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-04-07 00:44:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-04-07 00:44:32,237 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) [2022-04-07 00:44:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-04-07 00:44:32,240 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-04-07 00:44:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:32,240 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-04-07 00:44:32,241 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) [2022-04-07 00:44:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-04-07 00:44:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:44:32,241 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:32,241 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:32,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-07 00:44:32,242 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 1 times [2022-04-07 00:44:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:32,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [838744827] [2022-04-07 00:44:32,242 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -891835120, now seen corresponding path program 2 times [2022-04-07 00:44:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600464676] [2022-04-07 00:44:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600464676] [2022-04-07 00:44:32,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600464676] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:32,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:32,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:32,405 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:32,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [838744827] [2022-04-07 00:44:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [838744827] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:32,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:32,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:44:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259989179] [2022-04-07 00:44:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:32,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:44:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:44:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:44:32,406 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) [2022-04-07 00:44:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:33,061 INFO L93 Difference]: Finished difference Result 587 states and 833 transitions. [2022-04-07 00:44:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:33,061 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 [2022-04-07 00:44:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:33,064 INFO L225 Difference]: With dead ends: 587 [2022-04-07 00:44:33,064 INFO L226 Difference]: Without dead ends: 555 [2022-04-07 00:44:33,064 INFO L912 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 [2022-04-07 00:44:33,064 INFO L913 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, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:33,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 730 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-04-07 00:44:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-04-07 00:44:33,126 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) [2022-04-07 00:44:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-04-07 00:44:33,128 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-04-07 00:44:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:33,128 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-04-07 00:44:33,128 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) [2022-04-07 00:44:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-04-07 00:44:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:44:33,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:33,129 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:33,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-07 00:44:33,129 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 1 times [2022-04-07 00:44:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1280611702] [2022-04-07 00:44:33,129 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1408987470, now seen corresponding path program 2 times [2022-04-07 00:44:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128477806] [2022-04-07 00:44:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:33,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:33,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128477806] [2022-04-07 00:44:33,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128477806] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:33,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:33,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:33,313 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:33,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1280611702] [2022-04-07 00:44:33,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1280611702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:33,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:33,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396903027] [2022-04-07 00:44:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:33,313 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:33,314 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) [2022-04-07 00:44:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:34,165 INFO L93 Difference]: Finished difference Result 670 states and 993 transitions. [2022-04-07 00:44:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:34,166 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 [2022-04-07 00:44:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:34,168 INFO L225 Difference]: With dead ends: 670 [2022-04-07 00:44:34,168 INFO L226 Difference]: Without dead ends: 624 [2022-04-07 00:44:34,169 INFO L912 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 [2022-04-07 00:44:34,169 INFO L913 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 [2022-04-07 00:44:34,169 INFO L914 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] [2022-04-07 00:44:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-04-07 00:44:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-04-07 00:44:34,242 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) [2022-04-07 00:44:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-04-07 00:44:34,244 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-04-07 00:44:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:34,245 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-04-07 00:44:34,245 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) [2022-04-07 00:44:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-04-07 00:44:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:44:34,245 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:34,246 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:34,246 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-07 00:44:34,246 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 1 times [2022-04-07 00:44:34,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [734710523] [2022-04-07 00:44:34,246 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1555680272, now seen corresponding path program 2 times [2022-04-07 00:44:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:34,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277182831] [2022-04-07 00:44:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:34,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277182831] [2022-04-07 00:44:34,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277182831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:34,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:34,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:44:34,373 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [734710523] [2022-04-07 00:44:34,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [734710523] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:34,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:34,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:44:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830829470] [2022-04-07 00:44:34,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:34,373 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 00:44:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 00:44:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:44:34,374 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) [2022-04-07 00:44:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:35,041 INFO L93 Difference]: Finished difference Result 714 states and 1095 transitions. [2022-04-07 00:44:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 00:44:35,041 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 [2022-04-07 00:44:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:35,045 INFO L225 Difference]: With dead ends: 714 [2022-04-07 00:44:35,045 INFO L226 Difference]: Without dead ends: 701 [2022-04-07 00:44:35,045 INFO L912 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 [2022-04-07 00:44:35,046 INFO L913 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 [2022-04-07 00:44:35,046 INFO L914 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] [2022-04-07 00:44:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-04-07 00:44:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-04-07 00:44:35,132 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) [2022-04-07 00:44:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-04-07 00:44:35,134 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-04-07 00:44:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:35,134 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-04-07 00:44:35,134 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) [2022-04-07 00:44:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-04-07 00:44:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:44:35,136 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:35,136 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:35,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-07 00:44:35,136 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 1 times [2022-04-07 00:44:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1905522830] [2022-04-07 00:44:35,136 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1434451436, now seen corresponding path program 2 times [2022-04-07 00:44:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:35,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072560196] [2022-04-07 00:44:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:35,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072560196] [2022-04-07 00:44:35,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072560196] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:35,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:35,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:35,265 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1905522830] [2022-04-07 00:44:35,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1905522830] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:35,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:35,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621280439] [2022-04-07 00:44:35,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:35,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:35,266 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) [2022-04-07 00:44:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:36,043 INFO L93 Difference]: Finished difference Result 547 states and 781 transitions. [2022-04-07 00:44:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:36,044 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 [2022-04-07 00:44:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:36,047 INFO L225 Difference]: With dead ends: 547 [2022-04-07 00:44:36,047 INFO L226 Difference]: Without dead ends: 543 [2022-04-07 00:44:36,048 INFO L912 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 [2022-04-07 00:44:36,049 INFO L913 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, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:36,049 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1341 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-04-07 00:44:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-04-07 00:44:36,130 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) [2022-04-07 00:44:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-04-07 00:44:36,132 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-04-07 00:44:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:36,132 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-04-07 00:44:36,132 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) [2022-04-07 00:44:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-04-07 00:44:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:44:36,133 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:36,133 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:36,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-07 00:44:36,133 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 1 times [2022-04-07 00:44:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1809712323] [2022-04-07 00:44:36,134 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1434174606, now seen corresponding path program 2 times [2022-04-07 00:44:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208456125] [2022-04-07 00:44:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:36,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208456125] [2022-04-07 00:44:36,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208456125] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:36,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:36,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:36,279 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:36,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1809712323] [2022-04-07 00:44:36,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1809712323] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:36,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:36,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55574732] [2022-04-07 00:44:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:36,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:36,280 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) [2022-04-07 00:44:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:36,846 INFO L93 Difference]: Finished difference Result 562 states and 797 transitions. [2022-04-07 00:44:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:44:36,847 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 [2022-04-07 00:44:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:36,849 INFO L225 Difference]: With dead ends: 562 [2022-04-07 00:44:36,849 INFO L226 Difference]: Without dead ends: 538 [2022-04-07 00:44:36,850 INFO L912 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 [2022-04-07 00:44:36,850 INFO L913 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:36,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1408 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-04-07 00:44:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-04-07 00:44:36,920 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) [2022-04-07 00:44:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-04-07 00:44:36,922 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-04-07 00:44:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:36,922 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-04-07 00:44:36,922 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) [2022-04-07 00:44:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-04-07 00:44:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-07 00:44:36,922 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:36,922 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:36,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-07 00:44:36,923 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 1 times [2022-04-07 00:44:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:36,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [775945879] [2022-04-07 00:44:36,923 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1015972043, now seen corresponding path program 2 times [2022-04-07 00:44:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:36,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140525203] [2022-04-07 00:44:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-07 00:44:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 00:44:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140525203] [2022-04-07 00:44:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140525203] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:37,033 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:37,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [775945879] [2022-04-07 00:44:37,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [775945879] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:44:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893908593] [2022-04-07 00:44:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:37,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:44:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:44:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:44:37,034 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) [2022-04-07 00:44:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:37,508 INFO L93 Difference]: Finished difference Result 955 states and 1439 transitions. [2022-04-07 00:44:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:37,508 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 [2022-04-07 00:44:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:37,511 INFO L225 Difference]: With dead ends: 955 [2022-04-07 00:44:37,511 INFO L226 Difference]: Without dead ends: 549 [2022-04-07 00:44:37,513 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:37,513 INFO L913 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 [2022-04-07 00:44:37,513 INFO L914 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] [2022-04-07 00:44:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-04-07 00:44:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-04-07 00:44:37,580 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) [2022-04-07 00:44:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-04-07 00:44:37,582 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-04-07 00:44:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:37,582 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-04-07 00:44:37,582 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) [2022-04-07 00:44:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-04-07 00:44:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:44:37,582 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:37,582 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:37,582 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-07 00:44:37,583 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 1 times [2022-04-07 00:44:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:37,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1156055518] [2022-04-07 00:44:37,583 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash -72634305, now seen corresponding path program 2 times [2022-04-07 00:44:37,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:37,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672541946] [2022-04-07 00:44:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:44:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:37,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672541946] [2022-04-07 00:44:37,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672541946] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:37,740 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:37,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1156055518] [2022-04-07 00:44:37,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1156055518] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:37,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:37,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:37,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805217532] [2022-04-07 00:44:37,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:37,741 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:37,741 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) [2022-04-07 00:44:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:38,519 INFO L93 Difference]: Finished difference Result 675 states and 1000 transitions. [2022-04-07 00:44:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:38,520 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 [2022-04-07 00:44:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:38,522 INFO L225 Difference]: With dead ends: 675 [2022-04-07 00:44:38,523 INFO L226 Difference]: Without dead ends: 639 [2022-04-07 00:44:38,523 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:44:38,523 INFO L913 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 [2022-04-07 00:44:38,524 INFO L914 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] [2022-04-07 00:44:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-04-07 00:44:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-04-07 00:44:38,600 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) [2022-04-07 00:44:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-04-07 00:44:38,602 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-04-07 00:44:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:38,603 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-04-07 00:44:38,603 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) [2022-04-07 00:44:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-04-07 00:44:38,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-07 00:44:38,603 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:38,603 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:38,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-07 00:44:38,603 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 1 times [2022-04-07 00:44:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1931562685] [2022-04-07 00:44:38,604 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -960639770, now seen corresponding path program 2 times [2022-04-07 00:44:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521451136] [2022-04-07 00:44:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:38,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:44:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:38,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521451136] [2022-04-07 00:44:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521451136] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:38,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:38,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:38,832 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:38,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1931562685] [2022-04-07 00:44:38,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1931562685] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:38,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:38,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567065368] [2022-04-07 00:44:38,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:38,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:38,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:38,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:38,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:38,833 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) [2022-04-07 00:44:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:39,381 INFO L93 Difference]: Finished difference Result 856 states and 1268 transitions. [2022-04-07 00:44:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:44:39,382 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 [2022-04-07 00:44:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:39,386 INFO L225 Difference]: With dead ends: 856 [2022-04-07 00:44:39,386 INFO L226 Difference]: Without dead ends: 390 [2022-04-07 00:44:39,389 INFO L912 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 [2022-04-07 00:44:39,390 INFO L913 BasicCegarLoop]: 240 mSDtfsCounter, 200 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-04-07 00:44:39,391 INFO L914 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] [2022-04-07 00:44:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-07 00:44:39,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-04-07 00:44:39,466 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) [2022-04-07 00:44:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-04-07 00:44:39,467 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-04-07 00:44:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:39,467 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-04-07 00:44:39,467 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) [2022-04-07 00:44:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-04-07 00:44:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-07 00:44:39,468 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:39,468 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:39,468 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-07 00:44:39,468 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 1 times [2022-04-07 00:44:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1377417521] [2022-04-07 00:44:39,468 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash -293536386, now seen corresponding path program 2 times [2022-04-07 00:44:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:39,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323365606] [2022-04-07 00:44:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:39,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323365606] [2022-04-07 00:44:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323365606] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:39,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:39,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:39,656 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1377417521] [2022-04-07 00:44:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1377417521] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:39,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:39,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084569854] [2022-04-07 00:44:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:39,659 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 00:44:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 00:44:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:44:39,660 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) [2022-04-07 00:44:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:40,388 INFO L93 Difference]: Finished difference Result 346 states and 454 transitions. [2022-04-07 00:44:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:40,388 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 [2022-04-07 00:44:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:40,390 INFO L225 Difference]: With dead ends: 346 [2022-04-07 00:44:40,390 INFO L226 Difference]: Without dead ends: 304 [2022-04-07 00:44:40,391 INFO L912 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 [2022-04-07 00:44:40,391 INFO L913 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 [2022-04-07 00:44:40,391 INFO L914 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] [2022-04-07 00:44:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-04-07 00:44:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-04-07 00:44:40,455 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) [2022-04-07 00:44:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-04-07 00:44:40,456 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-04-07 00:44:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:40,457 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-04-07 00:44:40,457 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) [2022-04-07 00:44:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-04-07 00:44:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-07 00:44:40,457 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:40,457 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:40,457 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-07 00:44:40,457 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 1 times [2022-04-07 00:44:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:40,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [791172287] [2022-04-07 00:44:40,458 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash 476480639, now seen corresponding path program 2 times [2022-04-07 00:44:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:40,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608833410] [2022-04-07 00:44:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:44:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:40,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608833410] [2022-04-07 00:44:40,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608833410] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:40,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:40,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:40,620 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:40,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [791172287] [2022-04-07 00:44:40,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [791172287] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:40,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:40,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4922962] [2022-04-07 00:44:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:40,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:40,621 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) [2022-04-07 00:44:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:41,439 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2022-04-07 00:44:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:44:41,440 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 [2022-04-07 00:44:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:41,442 INFO L225 Difference]: With dead ends: 576 [2022-04-07 00:44:41,442 INFO L226 Difference]: Without dead ends: 316 [2022-04-07 00:44:41,443 INFO L912 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 [2022-04-07 00:44:41,444 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 252 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:41,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 830 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-07 00:44:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-04-07 00:44:41,496 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) [2022-04-07 00:44:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-04-07 00:44:41,497 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-04-07 00:44:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:41,498 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-04-07 00:44:41,498 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) [2022-04-07 00:44:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-04-07 00:44:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 00:44:41,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:41,498 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:41,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-07 00:44:41,498 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 1 times [2022-04-07 00:44:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1029060660] [2022-04-07 00:44:41,499 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1991566019, now seen corresponding path program 2 times [2022-04-07 00:44:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146446195] [2022-04-07 00:44:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:41,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 00:44:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146446195] [2022-04-07 00:44:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146446195] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:41,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:41,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:41,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1029060660] [2022-04-07 00:44:41,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1029060660] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:41,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:41,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025693373] [2022-04-07 00:44:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:41,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:41,664 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) [2022-04-07 00:44:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:42,025 INFO L93 Difference]: Finished difference Result 591 states and 822 transitions. [2022-04-07 00:44:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:42,026 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 [2022-04-07 00:44:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:42,028 INFO L225 Difference]: With dead ends: 591 [2022-04-07 00:44:42,028 INFO L226 Difference]: Without dead ends: 330 [2022-04-07 00:44:42,032 INFO L912 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 [2022-04-07 00:44:42,036 INFO L913 BasicCegarLoop]: 214 mSDtfsCounter, 183 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:42,036 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1020 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 00:44:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-04-07 00:44:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-04-07 00:44:42,084 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) [2022-04-07 00:44:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-04-07 00:44:42,085 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 69 [2022-04-07 00:44:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:42,085 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-04-07 00:44:42,085 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) [2022-04-07 00:44:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-04-07 00:44:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 00:44:42,087 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:42,087 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:42,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-07 00:44:42,087 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 1 times [2022-04-07 00:44:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [580959597] [2022-04-07 00:44:42,088 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash 437736013, now seen corresponding path program 2 times [2022-04-07 00:44:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236719039] [2022-04-07 00:44:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:42,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:44:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236719039] [2022-04-07 00:44:42,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236719039] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:42,203 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:42,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [580959597] [2022-04-07 00:44:42,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [580959597] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407270554] [2022-04-07 00:44:42,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:42,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:42,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:42,204 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) [2022-04-07 00:44:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:42,625 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2022-04-07 00:44:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:42,626 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 [2022-04-07 00:44:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:42,629 INFO L225 Difference]: With dead ends: 477 [2022-04-07 00:44:42,629 INFO L226 Difference]: Without dead ends: 474 [2022-04-07 00:44:42,630 INFO L912 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 [2022-04-07 00:44:42,630 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:42,630 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 755 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 00:44:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-04-07 00:44:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-04-07 00:44:42,725 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) [2022-04-07 00:44:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-04-07 00:44:42,726 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-04-07 00:44:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:42,726 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-04-07 00:44:42,727 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) [2022-04-07 00:44:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-04-07 00:44:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-07 00:44:42,727 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:42,727 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:42,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-07 00:44:42,728 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 1 times [2022-04-07 00:44:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [807110295] [2022-04-07 00:44:42,728 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 447050566, now seen corresponding path program 2 times [2022-04-07 00:44:42,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:42,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389351583] [2022-04-07 00:44:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:44:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:42,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389351583] [2022-04-07 00:44:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389351583] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:42,887 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [807110295] [2022-04-07 00:44:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [807110295] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:42,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:42,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:44:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681559406] [2022-04-07 00:44:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:42,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:44:42,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:44:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:44:42,888 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) [2022-04-07 00:44:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:43,453 INFO L93 Difference]: Finished difference Result 793 states and 1161 transitions. [2022-04-07 00:44:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:43,453 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 [2022-04-07 00:44:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:43,456 INFO L225 Difference]: With dead ends: 793 [2022-04-07 00:44:43,456 INFO L226 Difference]: Without dead ends: 529 [2022-04-07 00:44:43,458 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:43,458 INFO L913 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, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:43,458 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-04-07 00:44:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-04-07 00:44:43,538 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) [2022-04-07 00:44:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-04-07 00:44:43,539 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-04-07 00:44:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:43,540 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-04-07 00:44:43,540 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) [2022-04-07 00:44:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-04-07 00:44:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-07 00:44:43,540 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:43,540 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:43,540 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-07 00:44:43,540 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 1 times [2022-04-07 00:44:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:43,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1813510244] [2022-04-07 00:44:43,541 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1436145557, now seen corresponding path program 2 times [2022-04-07 00:44:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:43,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376144851] [2022-04-07 00:44:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 00:44:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:43,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:43,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376144851] [2022-04-07 00:44:43,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376144851] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:43,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:43,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:43,737 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:43,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1813510244] [2022-04-07 00:44:43,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1813510244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:43,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:43,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:44:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731727438] [2022-04-07 00:44:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:43,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:44:43,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:43,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:44:43,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:44:43,738 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) [2022-04-07 00:44:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:44,224 INFO L93 Difference]: Finished difference Result 942 states and 1393 transitions. [2022-04-07 00:44:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:44:44,225 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 [2022-04-07 00:44:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:44,228 INFO L225 Difference]: With dead ends: 942 [2022-04-07 00:44:44,228 INFO L226 Difference]: Without dead ends: 493 [2022-04-07 00:44:44,230 INFO L912 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 [2022-04-07 00:44:44,230 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 107 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:44,230 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1121 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-04-07 00:44:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-04-07 00:44:44,323 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) [2022-04-07 00:44:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-04-07 00:44:44,325 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-04-07 00:44:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:44,328 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-04-07 00:44:44,328 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) [2022-04-07 00:44:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-04-07 00:44:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-07 00:44:44,330 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:44,330 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:44,330 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-07 00:44:44,330 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 1 times [2022-04-07 00:44:44,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:44,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1016353092] [2022-04-07 00:44:44,331 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:44,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1927869214, now seen corresponding path program 2 times [2022-04-07 00:44:44,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:44,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519544202] [2022-04-07 00:44:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 00:44:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:44:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:44,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:44,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519544202] [2022-04-07 00:44:44,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519544202] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:44,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:44,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:44,503 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1016353092] [2022-04-07 00:44:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1016353092] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:44,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:44,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:44:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82994975] [2022-04-07 00:44:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:44,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:44:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:44:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:44:44,504 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) [2022-04-07 00:44:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:45,061 INFO L93 Difference]: Finished difference Result 869 states and 1255 transitions. [2022-04-07 00:44:45,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:45,061 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 [2022-04-07 00:44:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:45,064 INFO L225 Difference]: With dead ends: 869 [2022-04-07 00:44:45,064 INFO L226 Difference]: Without dead ends: 450 [2022-04-07 00:44:45,066 INFO L912 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 [2022-04-07 00:44:45,067 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 337 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-04-07 00:44:45,067 INFO L914 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] [2022-04-07 00:44:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-04-07 00:44:45,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-04-07 00:44:45,158 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) [2022-04-07 00:44:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-04-07 00:44:45,160 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-04-07 00:44:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:45,160 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-04-07 00:44:45,160 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) [2022-04-07 00:44:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-04-07 00:44:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-07 00:44:45,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:45,161 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:45,161 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-07 00:44:45,161 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 1 times [2022-04-07 00:44:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:45,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1902342604] [2022-04-07 00:44:45,162 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash -770629812, now seen corresponding path program 2 times [2022-04-07 00:44:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:45,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361539393] [2022-04-07 00:44:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-07 00:44:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361539393] [2022-04-07 00:44:45,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361539393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:45,466 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:45,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1902342604] [2022-04-07 00:44:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1902342604] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651798956] [2022-04-07 00:44:45,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:45,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-07 00:44:45,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-07 00:44:45,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:44:45,467 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) [2022-04-07 00:44:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:46,148 INFO L93 Difference]: Finished difference Result 486 states and 681 transitions. [2022-04-07 00:44:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 00:44:46,148 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 [2022-04-07 00:44:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:46,151 INFO L225 Difference]: With dead ends: 486 [2022-04-07 00:44:46,151 INFO L226 Difference]: Without dead ends: 461 [2022-04-07 00:44:46,152 INFO L912 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 [2022-04-07 00:44:46,152 INFO L913 BasicCegarLoop]: 230 mSDtfsCounter, 147 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:46,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2592 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:44:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-04-07 00:44:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-04-07 00:44:46,273 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) [2022-04-07 00:44:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-04-07 00:44:46,274 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-04-07 00:44:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:46,275 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-04-07 00:44:46,275 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) [2022-04-07 00:44:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-04-07 00:44:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-07 00:44:46,276 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:46,276 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:46,276 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-07 00:44:46,276 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 1 times [2022-04-07 00:44:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:46,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1029803215] [2022-04-07 00:44:46,277 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1033506351, now seen corresponding path program 2 times [2022-04-07 00:44:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:46,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643335944] [2022-04-07 00:44:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:46,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643335944] [2022-04-07 00:44:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643335944] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:46,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:46,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:46,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1029803215] [2022-04-07 00:44:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1029803215] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:46,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012937008] [2022-04-07 00:44:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:46,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-07 00:44:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-07 00:44:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:44:46,651 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) [2022-04-07 00:44:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:47,427 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2022-04-07 00:44:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 00:44:47,428 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 [2022-04-07 00:44:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:47,430 INFO L225 Difference]: With dead ends: 484 [2022-04-07 00:44:47,430 INFO L226 Difference]: Without dead ends: 459 [2022-04-07 00:44:47,430 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-04-07 00:44:47,431 INFO L913 BasicCegarLoop]: 245 mSDtfsCounter, 121 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:47,431 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2816 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:44:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-04-07 00:44:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-04-07 00:44:47,498 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) [2022-04-07 00:44:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-04-07 00:44:47,499 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-04-07 00:44:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:47,499 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-04-07 00:44:47,499 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) [2022-04-07 00:44:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-04-07 00:44:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 00:44:47,500 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:47,500 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:47,500 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-07 00:44:47,500 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 1 times [2022-04-07 00:44:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1233821117] [2022-04-07 00:44:47,501 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1724660735, now seen corresponding path program 2 times [2022-04-07 00:44:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554361615] [2022-04-07 00:44:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:44:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-07 00:44:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:47,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554361615] [2022-04-07 00:44:47,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554361615] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:47,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:47,829 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1233821117] [2022-04-07 00:44:47,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1233821117] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:47,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-07 00:44:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486979667] [2022-04-07 00:44:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:47,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-07 00:44:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-07 00:44:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:44:47,830 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) [2022-04-07 00:44:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:49,325 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2022-04-07 00:44:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-07 00:44:49,325 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 [2022-04-07 00:44:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:49,327 INFO L225 Difference]: With dead ends: 470 [2022-04-07 00:44:49,327 INFO L226 Difference]: Without dead ends: 434 [2022-04-07 00:44:49,328 INFO L912 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 [2022-04-07 00:44:49,328 INFO L913 BasicCegarLoop]: 210 mSDtfsCounter, 395 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:49,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 810 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:44:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-04-07 00:44:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-04-07 00:44:49,395 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) [2022-04-07 00:44:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-04-07 00:44:49,397 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-04-07 00:44:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:49,397 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-04-07 00:44:49,397 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) [2022-04-07 00:44:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-04-07 00:44:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-04-07 00:44:49,398 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:49,398 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:49,398 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-07 00:44:49,398 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 1 times [2022-04-07 00:44:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:49,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [901256347] [2022-04-07 00:44:49,398 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 56143006, now seen corresponding path program 2 times [2022-04-07 00:44:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:49,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680697057] [2022-04-07 00:44:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-07 00:44:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-07 00:44:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-07 00:44:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:49,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:49,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680697057] [2022-04-07 00:44:49,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680697057] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:49,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:49,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:49,859 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:49,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [901256347] [2022-04-07 00:44:49,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [901256347] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:49,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:49,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491251800] [2022-04-07 00:44:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:49,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-07 00:44:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-07 00:44:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-04-07 00:44:49,861 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) [2022-04-07 00:44:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:50,977 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-04-07 00:44:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-07 00:44:50,977 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 [2022-04-07 00:44:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:50,980 INFO L225 Difference]: With dead ends: 481 [2022-04-07 00:44:50,980 INFO L226 Difference]: Without dead ends: 454 [2022-04-07 00:44:50,981 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-04-07 00:44:50,981 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 121 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:50,981 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 2145 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:44:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-04-07 00:44:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-04-07 00:44:51,085 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) [2022-04-07 00:44:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-04-07 00:44:51,087 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-04-07 00:44:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:51,087 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-04-07 00:44:51,087 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) [2022-04-07 00:44:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-04-07 00:44:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-07 00:44:51,088 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:51,088 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:51,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-07 00:44:51,089 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 1 times [2022-04-07 00:44:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [714818182] [2022-04-07 00:44:51,089 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1819064313, now seen corresponding path program 2 times [2022-04-07 00:44:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:51,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901474463] [2022-04-07 00:44:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 00:44:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 00:44:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901474463] [2022-04-07 00:44:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901474463] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:51,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:51,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:51,445 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [714818182] [2022-04-07 00:44:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [714818182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:51,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:51,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660233346] [2022-04-07 00:44:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:51,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-07 00:44:51,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-07 00:44:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-04-07 00:44:51,447 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) [2022-04-07 00:44:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:52,407 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2022-04-07 00:44:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-07 00:44:52,408 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 [2022-04-07 00:44:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:52,410 INFO L225 Difference]: With dead ends: 483 [2022-04-07 00:44:52,410 INFO L226 Difference]: Without dead ends: 443 [2022-04-07 00:44:52,411 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-04-07 00:44:52,412 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 199 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:52,412 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 2542 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:44:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-04-07 00:44:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-04-07 00:44:52,502 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) [2022-04-07 00:44:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-04-07 00:44:52,504 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-04-07 00:44:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:52,504 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-04-07 00:44:52,504 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) [2022-04-07 00:44:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-04-07 00:44:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-07 00:44:52,505 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:52,506 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:52,506 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-07 00:44:52,506 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 1 times [2022-04-07 00:44:52,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:52,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1389635422] [2022-04-07 00:44:52,507 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -636706815, now seen corresponding path program 2 times [2022-04-07 00:44:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:52,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678985226] [2022-04-07 00:44:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-07 00:44:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678985226] [2022-04-07 00:44:52,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678985226] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:52,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:52,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:52,705 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1389635422] [2022-04-07 00:44:52,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1389635422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:52,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:52,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228030803] [2022-04-07 00:44:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:52,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 00:44:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:52,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 00:44:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:44:52,706 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) [2022-04-07 00:44:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:53,280 INFO L93 Difference]: Finished difference Result 734 states and 984 transitions. [2022-04-07 00:44:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:53,281 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 [2022-04-07 00:44:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:53,284 INFO L225 Difference]: With dead ends: 734 [2022-04-07 00:44:53,284 INFO L226 Difference]: Without dead ends: 420 [2022-04-07 00:44:53,285 INFO L912 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 [2022-04-07 00:44:53,286 INFO L913 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, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:53,286 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1131 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-04-07 00:44:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-04-07 00:44:53,363 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) [2022-04-07 00:44:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-04-07 00:44:53,365 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-04-07 00:44:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:53,365 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-04-07 00:44:53,365 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) [2022-04-07 00:44:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-04-07 00:44:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-04-07 00:44:53,367 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:53,367 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:53,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-07 00:44:53,367 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 1 times [2022-04-07 00:44:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:53,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [943353901] [2022-04-07 00:44:53,368 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1406877123, now seen corresponding path program 2 times [2022-04-07 00:44:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70821939] [2022-04-07 00:44:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-07 00:44:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70821939] [2022-04-07 00:44:53,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70821939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:53,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:53,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:53,603 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [943353901] [2022-04-07 00:44:53,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [943353901] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:53,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:53,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:44:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879644286] [2022-04-07 00:44:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:53,604 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 00:44:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 00:44:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:44:53,604 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) [2022-04-07 00:44:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:54,116 INFO L93 Difference]: Finished difference Result 592 states and 836 transitions. [2022-04-07 00:44:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:44:54,116 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 [2022-04-07 00:44:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:54,119 INFO L225 Difference]: With dead ends: 592 [2022-04-07 00:44:54,119 INFO L226 Difference]: Without dead ends: 547 [2022-04-07 00:44:54,120 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:44:54,120 INFO L913 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, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:54,120 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1249 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 00:44:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-04-07 00:44:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-04-07 00:44:54,200 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) [2022-04-07 00:44:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-04-07 00:44:54,201 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-04-07 00:44:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:54,201 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-04-07 00:44:54,201 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) [2022-04-07 00:44:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-04-07 00:44:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-07 00:44:54,202 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:54,202 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:44:54,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-07 00:44:54,202 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 1 times [2022-04-07 00:44:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [676060637] [2022-04-07 00:44:54,203 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 359745241, now seen corresponding path program 2 times [2022-04-07 00:44:54,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371814497] [2022-04-07 00:44:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:54,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:44:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:44:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-07 00:44:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-07 00:44:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-07 00:44:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:44:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371814497] [2022-04-07 00:44:54,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371814497] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:54,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:54,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:54,576 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:54,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [676060637] [2022-04-07 00:44:54,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [676060637] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:54,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:54,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-07 00:44:54,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700683877] [2022-04-07 00:44:54,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:54,577 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-07 00:44:54,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-07 00:44:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-04-07 00:44:54,579 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) [2022-04-07 00:44:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:55,942 INFO L93 Difference]: Finished difference Result 416 states and 551 transitions. [2022-04-07 00:44:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-07 00:44:55,942 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 [2022-04-07 00:44:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:55,944 INFO L225 Difference]: With dead ends: 416 [2022-04-07 00:44:55,944 INFO L226 Difference]: Without dead ends: 354 [2022-04-07 00:44:55,945 INFO L912 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 [2022-04-07 00:44:55,945 INFO L913 BasicCegarLoop]: 178 mSDtfsCounter, 476 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-04-07 00:44:55,945 INFO L914 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] [2022-04-07 00:44:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-04-07 00:44:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-04-07 00:44:56,030 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) [2022-04-07 00:44:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-04-07 00:44:56,031 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-04-07 00:44:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:56,031 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-04-07 00:44:56,032 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) [2022-04-07 00:44:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-04-07 00:44:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-04-07 00:44:56,033 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:56,033 INFO L499 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] [2022-04-07 00:44:56,033 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-07 00:44:56,033 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 1 times [2022-04-07 00:44:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:56,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [923491959] [2022-04-07 00:44:56,035 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1772031017, now seen corresponding path program 2 times [2022-04-07 00:44:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:56,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019821625] [2022-04-07 00:44:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:44:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-07 00:44:56,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:56,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019821625] [2022-04-07 00:44:56,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019821625] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:44:56,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748290997] [2022-04-07 00:44:56,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:44:56,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:44:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:56,287 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) [2022-04-07 00:44:56,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 00:44:56,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:44:56,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:44:56,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 00:44:56,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:44:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-07 00:44:56,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:44:56,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748290997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:56,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:44:56,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:44:56,682 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [923491959] [2022-04-07 00:44:56,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [923491959] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:56,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:56,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746382181] [2022-04-07 00:44:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:56,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:44:56,684 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) [2022-04-07 00:44:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:56,816 INFO L93 Difference]: Finished difference Result 373 states and 477 transitions. [2022-04-07 00:44:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:56,817 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 [2022-04-07 00:44:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:56,819 INFO L225 Difference]: With dead ends: 373 [2022-04-07 00:44:56,819 INFO L226 Difference]: Without dead ends: 362 [2022-04-07 00:44:56,819 INFO L912 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 [2022-04-07 00:44:56,820 INFO L913 BasicCegarLoop]: 196 mSDtfsCounter, 14 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:56,820 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 927 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:44:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-04-07 00:44:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 343. [2022-04-07 00:44:56,912 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) [2022-04-07 00:44:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 438 transitions. [2022-04-07 00:44:56,913 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 438 transitions. Word has length 163 [2022-04-07 00:44:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:56,914 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 438 transitions. [2022-04-07 00:44:56,914 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) [2022-04-07 00:44:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 438 transitions. [2022-04-07 00:44:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-04-07 00:44:56,915 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:56,915 INFO L499 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] [2022-04-07 00:44:56,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 00:44:57,135 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 [2022-04-07 00:44:57,136 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 1 times [2022-04-07 00:44:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [561886773] [2022-04-07 00:44:57,137 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 422140520, now seen corresponding path program 2 times [2022-04-07 00:44:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:57,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780114236] [2022-04-07 00:44:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:44:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-07 00:44:57,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:57,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780114236] [2022-04-07 00:44:57,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780114236] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:44:57,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470507475] [2022-04-07 00:44:57,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:44:57,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:44:57,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:57,400 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) [2022-04-07 00:44:57,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 00:44:57,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:44:57,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:44:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 00:44:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:44:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-07 00:44:57,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:44:57,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470507475] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:57,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:44:57,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:44:57,848 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [561886773] [2022-04-07 00:44:57,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [561886773] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:57,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046938] [2022-04-07 00:44:57,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:57,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:57,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:57,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:44:57,850 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) [2022-04-07 00:44:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:57,994 INFO L93 Difference]: Finished difference Result 611 states and 782 transitions. [2022-04-07 00:44:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:57,995 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 [2022-04-07 00:44:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:57,997 INFO L225 Difference]: With dead ends: 611 [2022-04-07 00:44:57,997 INFO L226 Difference]: Without dead ends: 398 [2022-04-07 00:44:57,998 INFO L912 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 [2022-04-07 00:44:57,999 INFO L913 BasicCegarLoop]: 218 mSDtfsCounter, 30 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:57,999 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1031 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:44:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-04-07 00:44:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 325. [2022-04-07 00:44:58,075 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) [2022-04-07 00:44:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 406 transitions. [2022-04-07 00:44:58,076 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 406 transitions. Word has length 163 [2022-04-07 00:44:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:58,076 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 406 transitions. [2022-04-07 00:44:58,076 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) [2022-04-07 00:44:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 406 transitions. [2022-04-07 00:44:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-04-07 00:44:58,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:58,078 INFO L499 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] [2022-04-07 00:44:58,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-07 00:44:58,291 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 [2022-04-07 00:44:58,291 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 1 times [2022-04-07 00:44:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1807398491] [2022-04-07 00:44:58,293 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash 674044285, now seen corresponding path program 2 times [2022-04-07 00:44:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:58,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726692417] [2022-04-07 00:44:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:44:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-07 00:44:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-07 00:44:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:44:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726692417] [2022-04-07 00:44:58,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726692417] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:44:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869937104] [2022-04-07 00:44:58,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:44:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:44:58,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:58,569 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) [2022-04-07 00:44:58,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 00:44:58,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:44:58,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:44:58,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 00:44:58,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:44:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:44:59,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:44:59,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869937104] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:59,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:44:59,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:44:59,023 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:44:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1807398491] [2022-04-07 00:44:59,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1807398491] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:44:59,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:44:59,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:44:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743765619] [2022-04-07 00:44:59,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:44:59,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:44:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:44:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:44:59,024 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) [2022-04-07 00:44:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:44:59,143 INFO L93 Difference]: Finished difference Result 343 states and 425 transitions. [2022-04-07 00:44:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:44:59,143 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 [2022-04-07 00:44:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:44:59,145 INFO L225 Difference]: With dead ends: 343 [2022-04-07 00:44:59,145 INFO L226 Difference]: Without dead ends: 332 [2022-04-07 00:44:59,145 INFO L912 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 [2022-04-07 00:44:59,146 INFO L913 BasicCegarLoop]: 192 mSDtfsCounter, 8 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:44:59,146 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 912 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:44:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-04-07 00:44:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2022-04-07 00:44:59,219 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) [2022-04-07 00:44:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 404 transitions. [2022-04-07 00:44:59,220 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 404 transitions. Word has length 203 [2022-04-07 00:44:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:44:59,221 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 404 transitions. [2022-04-07 00:44:59,221 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) [2022-04-07 00:44:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 404 transitions. [2022-04-07 00:44:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-04-07 00:44:59,222 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:44:59,223 INFO L499 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] [2022-04-07 00:44:59,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 00:44:59,442 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 [2022-04-07 00:44:59,443 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:44:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:44:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 1 times [2022-04-07 00:44:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:44:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [147422259] [2022-04-07 00:44:59,444 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:44:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2064315717, now seen corresponding path program 2 times [2022-04-07 00:44:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:44:59,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010997414] [2022-04-07 00:44:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:44:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:44:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:44:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:44:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:44:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:44:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:44:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:44:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:44:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:44:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:44:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:44:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-07 00:44:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-07 00:44:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:44:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:44:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:44:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:44:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:44:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:44:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010997414] [2022-04-07 00:44:59,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010997414] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:44:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911283143] [2022-04-07 00:44:59,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:44:59,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:44:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:44:59,774 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) [2022-04-07 00:44:59,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-07 00:44:59,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:44:59,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:44:59,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 00:44:59,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:45:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-07 00:45:00,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:45:00,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911283143] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:00,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:45:00,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-04-07 00:45:00,198 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [147422259] [2022-04-07 00:45:00,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [147422259] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:00,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:00,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 00:45:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987166133] [2022-04-07 00:45:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:00,198 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 00:45:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 00:45:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:00,199 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) [2022-04-07 00:45:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:00,289 INFO L93 Difference]: Finished difference Result 350 states and 436 transitions. [2022-04-07 00:45:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 00:45:00,289 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 [2022-04-07 00:45:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:00,291 INFO L225 Difference]: With dead ends: 350 [2022-04-07 00:45:00,291 INFO L226 Difference]: Without dead ends: 335 [2022-04-07 00:45:00,291 INFO L912 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 [2022-04-07 00:45:00,292 INFO L913 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 [2022-04-07 00:45:00,292 INFO L914 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] [2022-04-07 00:45:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-04-07 00:45:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2022-04-07 00:45:00,363 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) [2022-04-07 00:45:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 408 transitions. [2022-04-07 00:45:00,364 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 408 transitions. Word has length 206 [2022-04-07 00:45:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:00,364 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 408 transitions. [2022-04-07 00:45:00,364 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) [2022-04-07 00:45:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 408 transitions. [2022-04-07 00:45:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-04-07 00:45:00,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:00,367 INFO L499 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] [2022-04-07 00:45:00,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-07 00:45:00,572 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 [2022-04-07 00:45:00,572 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 1 times [2022-04-07 00:45:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:00,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1596639261] [2022-04-07 00:45:00,573 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1529587001, now seen corresponding path program 2 times [2022-04-07 00:45:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:00,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495086924] [2022-04-07 00:45:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:45:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:45:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:45:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:45:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:45:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:45:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:45:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-07 00:45:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-07 00:45:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:45:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:00,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495086924] [2022-04-07 00:45:00,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495086924] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:45:00,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070988502] [2022-04-07 00:45:00,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:45:00,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:45:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:45:00,835 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) [2022-04-07 00:45:00,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-07 00:45:01,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:45:01,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:45:01,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 00:45:01,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:45:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:45:01,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:45:01,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070988502] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:01,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:45:01,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:45:01,301 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:01,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1596639261] [2022-04-07 00:45:01,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1596639261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:01,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:01,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978638747] [2022-04-07 00:45:01,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:01,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:45:01,302 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) [2022-04-07 00:45:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:01,463 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2022-04-07 00:45:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:01,464 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 [2022-04-07 00:45:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:01,465 INFO L225 Difference]: With dead ends: 346 [2022-04-07 00:45:01,465 INFO L226 Difference]: Without dead ends: 329 [2022-04-07 00:45:01,466 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:01,466 INFO L913 BasicCegarLoop]: 170 mSDtfsCounter, 9 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:01,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 820 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:45:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-04-07 00:45:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 325. [2022-04-07 00:45:01,555 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) [2022-04-07 00:45:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 398 transitions. [2022-04-07 00:45:01,556 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 398 transitions. Word has length 206 [2022-04-07 00:45:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:01,556 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 398 transitions. [2022-04-07 00:45:01,556 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) [2022-04-07 00:45:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 398 transitions. [2022-04-07 00:45:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-04-07 00:45:01,558 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:01,558 INFO L499 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] [2022-04-07 00:45:01,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-07 00:45:01,761 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 [2022-04-07 00:45:01,761 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 1 times [2022-04-07 00:45:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:01,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [456228671] [2022-04-07 00:45:01,762 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1534631942, now seen corresponding path program 2 times [2022-04-07 00:45:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:01,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015712054] [2022-04-07 00:45:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:01,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:45:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:45:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:45:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:45:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:45:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:45:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:45:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-07 00:45:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-07 00:45:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:45:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015712054] [2022-04-07 00:45:02,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015712054] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:45:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982978860] [2022-04-07 00:45:02,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:45:02,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:45:02,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:45:02,003 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) [2022-04-07 00:45:02,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-07 00:45:02,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:45:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:45:02,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 00:45:02,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:45:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:45:02,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:45:02,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982978860] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:02,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:45:02,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:45:02,506 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [456228671] [2022-04-07 00:45:02,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [456228671] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:02,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:02,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:02,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306099791] [2022-04-07 00:45:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:02,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:02,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:45:02,507 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) [2022-04-07 00:45:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:02,710 INFO L93 Difference]: Finished difference Result 336 states and 409 transitions. [2022-04-07 00:45:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:02,711 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 [2022-04-07 00:45:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:02,712 INFO L225 Difference]: With dead ends: 336 [2022-04-07 00:45:02,712 INFO L226 Difference]: Without dead ends: 286 [2022-04-07 00:45:02,713 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:02,715 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:02,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 817 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:45:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-04-07 00:45:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-04-07 00:45:02,799 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) [2022-04-07 00:45:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 332 transitions. [2022-04-07 00:45:02,800 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 332 transitions. Word has length 206 [2022-04-07 00:45:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:02,800 INFO L478 AbstractCegarLoop]: Abstraction has 285 states and 332 transitions. [2022-04-07 00:45:02,800 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) [2022-04-07 00:45:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 332 transitions. [2022-04-07 00:45:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-04-07 00:45:02,801 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:02,802 INFO L499 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] [2022-04-07 00:45:02,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-07 00:45:03,022 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 [2022-04-07 00:45:03,022 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 1 times [2022-04-07 00:45:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:03,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1286216023] [2022-04-07 00:45:03,023 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2063985540, now seen corresponding path program 2 times [2022-04-07 00:45:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:03,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416826718] [2022-04-07 00:45:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 00:45:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:45:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:45:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 00:45:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:45:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 00:45:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-07 00:45:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-07 00:45:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-07 00:45:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:45:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-07 00:45:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-04-07 00:45:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:03,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416826718] [2022-04-07 00:45:03,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416826718] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 00:45:03,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602631595] [2022-04-07 00:45:03,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 00:45:03,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 00:45:03,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:45:03,287 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) [2022-04-07 00:45:03,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-07 00:45:03,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 00:45:03,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 00:45:03,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 00:45:03,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 00:45:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-04-07 00:45:03,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 00:45:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602631595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 00:45:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-04-07 00:45:03,772 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1286216023] [2022-04-07 00:45:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1286216023] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:03,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852868806] [2022-04-07 00:45:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:03,773 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:03,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:45:03,774 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) [2022-04-07 00:45:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:03,865 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2022-04-07 00:45:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:03,865 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 [2022-04-07 00:45:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:03,865 INFO L225 Difference]: With dead ends: 287 [2022-04-07 00:45:03,866 INFO L226 Difference]: Without dead ends: 0 [2022-04-07 00:45:03,867 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:03,867 INFO L913 BasicCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:03,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 688 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 00:45:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-07 00:45:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-07 00:45:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-07 00:45:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-07 00:45:03,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-04-07 00:45:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:03,868 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-07 00:45:03,868 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) [2022-04-07 00:45:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 00:45:03,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 00:45:03,870 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 00:45:03,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-07 00:45:04,091 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 [2022-04-07 00:45:04,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-07 00:46:49,354 WARN L232 SmtUtils]: Spent 1.75m 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) [2022-04-07 00:47:08,848 WARN L232 SmtUtils]: Spent 19.49s 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) [2022-04-07 00:49:30,552 WARN L232 SmtUtils]: Spent 2.36m 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) [2022-04-07 00:49:51,564 WARN L232 SmtUtils]: Spent 21.00s 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) [2022-04-07 00:51:30,979 WARN L232 SmtUtils]: Spent 1.66m 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) [2022-04-07 00:51:53,260 WARN L232 SmtUtils]: Spent 22.27s 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) [2022-04-07 00:52:15,974 WARN L232 SmtUtils]: Spent 22.71s 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) [2022-04-07 00:54:32,321 WARN L232 SmtUtils]: Spent 2.27m 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)