/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:07:58,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:07:58,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:07:58,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:07:58,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:07:58,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:07:58,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:07:58,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:07:58,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:07:58,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:07:58,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:07:58,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:07:58,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:07:58,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:07:58,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:07:58,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:07:58,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:07:58,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:07:58,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:07:58,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:07:58,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:07:58,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:07:58,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:07:58,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:07:58,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:07:58,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:07:58,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:07:58,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:07:58,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:07:58,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:07:58,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:07:58,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:07:58,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:07:58,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:07:58,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:07:58,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:07:58,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:07:58,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:07:58,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:07:58,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:07:58,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:07:58,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:07:58,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:07:58,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:07:58,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:07:58,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:07:58,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:07:58,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:07:58,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:07:58,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:07:58,929 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:07:58,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:07:58,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:07:58,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:07:58,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:07:58,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:07:58,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:58,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:07:58,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:07:58,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:07:58,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:07:58,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:07:58,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:07:58,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:07:59,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:07:59,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:07:59,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:07:59,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:07:59,116 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:07:59,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-10 01:07:59,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eea512f8/833490ad6d09417b88845bf571396d64/FLAGbc3f90d86 [2022-01-10 01:07:59,565 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:07:59,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c [2022-01-10 01:07:59,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eea512f8/833490ad6d09417b88845bf571396d64/FLAGbc3f90d86 [2022-01-10 01:07:59,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eea512f8/833490ad6d09417b88845bf571396d64 [2022-01-10 01:07:59,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:07:59,599 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:07:59,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:59,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:07:59,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:07:59,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:07:59,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ff2559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59, skipping insertion in model container [2022-01-10 01:07:59,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:07:59,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:07:59,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:07:59,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c[706,719] [2022-01-10 01:07:59,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:59,892 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:07:59,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.06.cil.c[706,719] [2022-01-10 01:07:59,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:59,945 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:07:59,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59 WrapperNode [2022-01-10 01:07:59,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:59,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:59,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:07:59,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:07:59,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:07:59,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:07:59,988 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 492 [2022-01-10 01:07:59,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:59,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:07:59,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:07:59,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:08:00,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:08:00,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:08:00,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:08:00,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:08:00,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (1/1) ... [2022-01-10 01:08:00,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:08:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:08:00,073 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) [2022-01-10 01:08:00,075 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 [2022-01-10 01:08:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:08:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:08:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:08:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:08:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:08:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:08:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:08:00,119 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:08:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:08:00,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:08:00,180 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:08:00,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:08:00,636 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:08:00,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:08:00,643 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 01:08:00,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:00 BoogieIcfgContainer [2022-01-10 01:08:00,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:08:00,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:08:00,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:08:00,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:08:00,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:59" (1/3) ... [2022-01-10 01:08:00,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38880226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:00, skipping insertion in model container [2022-01-10 01:08:00,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:59" (2/3) ... [2022-01-10 01:08:00,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38880226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:00, skipping insertion in model container [2022-01-10 01:08:00,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:00" (3/3) ... [2022-01-10 01:08:00,656 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2022-01-10 01:08:00,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:08:00,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:08:00,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:08:00,699 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:08:00,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:08:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 01:08:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:00,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:00,724 INFO L514 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] [2022-01-10 01:08:00,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1353655359, now seen corresponding path program 1 times [2022-01-10 01:08:00,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:00,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320481497] [2022-01-10 01:08:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:00,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:01,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320481497] [2022-01-10 01:08:01,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320481497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:01,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:01,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:08:01,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693158955] [2022-01-10 01:08:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:01,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:08:01,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:08:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:08:01,118 INFO L87 Difference]: Start difference. First operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:01,799 INFO L93 Difference]: Finished difference Result 521 states and 845 transitions. [2022-01-10 01:08:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:08:01,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:01,815 INFO L225 Difference]: With dead ends: 521 [2022-01-10 01:08:01,815 INFO L226 Difference]: Without dead ends: 297 [2022-01-10 01:08:01,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:01,824 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 568 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:01,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 613 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-10 01:08:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 223. [2022-01-10 01:08:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 198 states have internal predecessors, (301), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-10 01:08:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 339 transitions. [2022-01-10 01:08:01,864 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 339 transitions. Word has length 115 [2022-01-10 01:08:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:01,864 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 339 transitions. [2022-01-10 01:08:01,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 339 transitions. [2022-01-10 01:08:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:01,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:01,867 INFO L514 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] [2022-01-10 01:08:01,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:08:01,867 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash -730373757, now seen corresponding path program 1 times [2022-01-10 01:08:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015908127] [2022-01-10 01:08:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:01,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:01,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:01,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015908127] [2022-01-10 01:08:01,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015908127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:01,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:01,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:08:01,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403286603] [2022-01-10 01:08:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:01,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:08:01,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:08:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:08:01,974 INFO L87 Difference]: Start difference. First operand 223 states and 339 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:03,161 INFO L93 Difference]: Finished difference Result 794 states and 1245 transitions. [2022-01-10 01:08:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:08:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:03,173 INFO L225 Difference]: With dead ends: 794 [2022-01-10 01:08:03,173 INFO L226 Difference]: Without dead ends: 585 [2022-01-10 01:08:03,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:08:03,178 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 837 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:03,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 953 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:08:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-01-10 01:08:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 437. [2022-01-10 01:08:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 390 states have (on average 1.5384615384615385) internal successors, (600), 392 states have internal predecessors, (600), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-01-10 01:08:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 669 transitions. [2022-01-10 01:08:03,217 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 669 transitions. Word has length 115 [2022-01-10 01:08:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:03,218 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 669 transitions. [2022-01-10 01:08:03,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 669 transitions. [2022-01-10 01:08:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:03,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:03,219 INFO L514 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] [2022-01-10 01:08:03,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:08:03,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1581446434, now seen corresponding path program 1 times [2022-01-10 01:08:03,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:03,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539262330] [2022-01-10 01:08:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:03,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:03,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539262330] [2022-01-10 01:08:03,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539262330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:03,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:03,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:03,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630570356] [2022-01-10 01:08:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:03,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:03,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:03,319 INFO L87 Difference]: Start difference. First operand 437 states and 669 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:03,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:03,974 INFO L93 Difference]: Finished difference Result 1016 states and 1582 transitions. [2022-01-10 01:08:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:08:03,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:03,977 INFO L225 Difference]: With dead ends: 1016 [2022-01-10 01:08:03,977 INFO L226 Difference]: Without dead ends: 593 [2022-01-10 01:08:03,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:08:03,979 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 702 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:03,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 777 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-10 01:08:03,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 437. [2022-01-10 01:08:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 390 states have (on average 1.5333333333333334) internal successors, (598), 392 states have internal predecessors, (598), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-01-10 01:08:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 667 transitions. [2022-01-10 01:08:04,001 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 667 transitions. Word has length 115 [2022-01-10 01:08:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:04,002 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 667 transitions. [2022-01-10 01:08:04,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 667 transitions. [2022-01-10 01:08:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:04,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:04,003 INFO L514 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] [2022-01-10 01:08:04,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:08:04,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash -324956832, now seen corresponding path program 1 times [2022-01-10 01:08:04,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:04,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642987867] [2022-01-10 01:08:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:04,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:04,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:04,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642987867] [2022-01-10 01:08:04,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642987867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:04,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:04,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:04,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525067783] [2022-01-10 01:08:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:04,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:04,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:04,086 INFO L87 Difference]: Start difference. First operand 437 states and 667 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:05,668 INFO L93 Difference]: Finished difference Result 1393 states and 2154 transitions. [2022-01-10 01:08:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:05,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:05,672 INFO L225 Difference]: With dead ends: 1393 [2022-01-10 01:08:05,672 INFO L226 Difference]: Without dead ends: 970 [2022-01-10 01:08:05,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:05,674 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 900 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 1759 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:08:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-01-10 01:08:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 637. [2022-01-10 01:08:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 569 states have (on average 1.5254833040421794) internal successors, (868), 572 states have internal predecessors, (868), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 01:08:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 967 transitions. [2022-01-10 01:08:05,702 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 967 transitions. Word has length 115 [2022-01-10 01:08:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:05,702 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 967 transitions. [2022-01-10 01:08:05,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 967 transitions. [2022-01-10 01:08:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:05,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:05,704 INFO L514 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] [2022-01-10 01:08:05,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:08:05,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1276114274, now seen corresponding path program 1 times [2022-01-10 01:08:05,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822269637] [2022-01-10 01:08:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:05,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:05,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:05,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822269637] [2022-01-10 01:08:05,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822269637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:05,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:05,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:05,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495497290] [2022-01-10 01:08:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:05,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:05,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:05,812 INFO L87 Difference]: Start difference. First operand 637 states and 967 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:07,444 INFO L93 Difference]: Finished difference Result 2138 states and 3298 transitions. [2022-01-10 01:08:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:07,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:07,454 INFO L225 Difference]: With dead ends: 2138 [2022-01-10 01:08:07,454 INFO L226 Difference]: Without dead ends: 1515 [2022-01-10 01:08:07,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:07,458 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 894 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:07,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1747 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:08:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-01-10 01:08:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1042. [2022-01-10 01:08:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 932 states have (on average 1.5203862660944205) internal successors, (1417), 937 states have internal predecessors, (1417), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-01-10 01:08:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1580 transitions. [2022-01-10 01:08:07,524 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1580 transitions. Word has length 115 [2022-01-10 01:08:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:07,524 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 1580 transitions. [2022-01-10 01:08:07,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1580 transitions. [2022-01-10 01:08:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:07,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:07,526 INFO L514 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] [2022-01-10 01:08:07,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:08:07,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1667467804, now seen corresponding path program 1 times [2022-01-10 01:08:07,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:07,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387116369] [2022-01-10 01:08:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:07,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:07,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:07,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387116369] [2022-01-10 01:08:07,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387116369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:07,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:07,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:07,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121414911] [2022-01-10 01:08:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:07,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:07,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:07,621 INFO L87 Difference]: Start difference. First operand 1042 states and 1580 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:09,168 INFO L93 Difference]: Finished difference Result 3587 states and 5515 transitions. [2022-01-10 01:08:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:09,196 INFO L225 Difference]: With dead ends: 3587 [2022-01-10 01:08:09,196 INFO L226 Difference]: Without dead ends: 2559 [2022-01-10 01:08:09,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:09,203 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 893 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:09,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1742 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:08:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2022-01-10 01:08:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1853. [2022-01-10 01:08:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1659 states have (on average 1.5159734779987946) internal successors, (2515), 1668 states have internal predecessors, (2515), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-01-10 01:08:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2812 transitions. [2022-01-10 01:08:09,290 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2812 transitions. Word has length 115 [2022-01-10 01:08:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:09,290 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2812 transitions. [2022-01-10 01:08:09,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2812 transitions. [2022-01-10 01:08:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:09,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:09,293 INFO L514 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] [2022-01-10 01:08:09,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:08:09,293 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1008524578, now seen corresponding path program 1 times [2022-01-10 01:08:09,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:09,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624651134] [2022-01-10 01:08:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:09,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:09,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:09,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624651134] [2022-01-10 01:08:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624651134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:09,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:09,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:09,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593778768] [2022-01-10 01:08:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:09,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:09,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:09,397 INFO L87 Difference]: Start difference. First operand 1853 states and 2812 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:11,037 INFO L93 Difference]: Finished difference Result 6484 states and 9965 transitions. [2022-01-10 01:08:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:11,058 INFO L225 Difference]: With dead ends: 6484 [2022-01-10 01:08:11,058 INFO L226 Difference]: Without dead ends: 4645 [2022-01-10 01:08:11,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:11,064 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 892 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:11,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1737 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:08:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2022-01-10 01:08:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 3482. [2022-01-10 01:08:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3120 states have (on average 1.5131410256410256) internal successors, (4721), 3137 states have internal predecessors, (4721), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-01-10 01:08:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5304 transitions. [2022-01-10 01:08:11,212 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5304 transitions. Word has length 115 [2022-01-10 01:08:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:11,212 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 5304 transitions. [2022-01-10 01:08:11,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5304 transitions. [2022-01-10 01:08:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:11,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:11,217 INFO L514 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] [2022-01-10 01:08:11,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:08:11,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash 125015588, now seen corresponding path program 1 times [2022-01-10 01:08:11,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560219627] [2022-01-10 01:08:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:11,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:11,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560219627] [2022-01-10 01:08:11,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560219627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:11,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:11,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:11,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061741216] [2022-01-10 01:08:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:11,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:11,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:11,303 INFO L87 Difference]: Start difference. First operand 3482 states and 5304 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:12,029 INFO L93 Difference]: Finished difference Result 8041 states and 12423 transitions. [2022-01-10 01:08:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:08:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:12,047 INFO L225 Difference]: With dead ends: 8041 [2022-01-10 01:08:12,047 INFO L226 Difference]: Without dead ends: 4573 [2022-01-10 01:08:12,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:08:12,057 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 702 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:12,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 753 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:08:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2022-01-10 01:08:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 3482. [2022-01-10 01:08:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3120 states have (on average 1.5076923076923077) internal successors, (4704), 3137 states have internal predecessors, (4704), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-01-10 01:08:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5287 transitions. [2022-01-10 01:08:12,262 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5287 transitions. Word has length 115 [2022-01-10 01:08:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:12,263 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 5287 transitions. [2022-01-10 01:08:12,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5287 transitions. [2022-01-10 01:08:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:12,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:12,267 INFO L514 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] [2022-01-10 01:08:12,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:08:12,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 96515298, now seen corresponding path program 1 times [2022-01-10 01:08:12,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:12,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980077617] [2022-01-10 01:08:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:12,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:12,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:12,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980077617] [2022-01-10 01:08:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980077617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:12,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:12,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:12,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619850544] [2022-01-10 01:08:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:12,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:12,353 INFO L87 Difference]: Start difference. First operand 3482 states and 5287 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:14,176 INFO L93 Difference]: Finished difference Result 13349 states and 20441 transitions. [2022-01-10 01:08:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:14,209 INFO L225 Difference]: With dead ends: 13349 [2022-01-10 01:08:14,209 INFO L226 Difference]: Without dead ends: 9881 [2022-01-10 01:08:14,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:14,218 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1058 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:14,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1640 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:08:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2022-01-10 01:08:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 6724. [2022-01-10 01:08:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 6042 states have (on average 1.5074478649453824) internal successors, (9108), 6075 states have internal predecessors, (9108), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-01-10 01:08:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10285 transitions. [2022-01-10 01:08:14,564 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10285 transitions. Word has length 115 [2022-01-10 01:08:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:14,565 INFO L470 AbstractCegarLoop]: Abstraction has 6724 states and 10285 transitions. [2022-01-10 01:08:14,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10285 transitions. [2022-01-10 01:08:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:14,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:14,574 INFO L514 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] [2022-01-10 01:08:14,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:08:14,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1844066716, now seen corresponding path program 1 times [2022-01-10 01:08:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:14,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259686805] [2022-01-10 01:08:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:14,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:14,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:14,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259686805] [2022-01-10 01:08:14,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259686805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:14,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:14,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:14,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571535742] [2022-01-10 01:08:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:14,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:14,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:14,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:14,663 INFO L87 Difference]: Start difference. First operand 6724 states and 10285 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:17,062 INFO L93 Difference]: Finished difference Result 25437 states and 39201 transitions. [2022-01-10 01:08:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:17,117 INFO L225 Difference]: With dead ends: 25437 [2022-01-10 01:08:17,117 INFO L226 Difference]: Without dead ends: 18727 [2022-01-10 01:08:17,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:17,137 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1018 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:17,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1651 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:08:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18727 states. [2022-01-10 01:08:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18727 to 13189. [2022-01-10 01:08:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13189 states, 11883 states have (on average 1.508541614070521) internal successors, (17926), 11948 states have internal predecessors, (17926), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-01-10 01:08:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13189 states to 13189 states and 20421 transitions. [2022-01-10 01:08:17,783 INFO L78 Accepts]: Start accepts. Automaton has 13189 states and 20421 transitions. Word has length 115 [2022-01-10 01:08:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:17,784 INFO L470 AbstractCegarLoop]: Abstraction has 13189 states and 20421 transitions. [2022-01-10 01:08:17,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 13189 states and 20421 transitions. [2022-01-10 01:08:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:17,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:17,799 INFO L514 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] [2022-01-10 01:08:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:08:17,799 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash 32996514, now seen corresponding path program 1 times [2022-01-10 01:08:17,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012317113] [2022-01-10 01:08:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:17,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:17,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012317113] [2022-01-10 01:08:17,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012317113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:17,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:17,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:17,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163556501] [2022-01-10 01:08:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:17,867 INFO L87 Difference]: Start difference. First operand 13189 states and 20421 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:21,196 INFO L93 Difference]: Finished difference Result 49020 states and 76423 transitions. [2022-01-10 01:08:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:21,310 INFO L225 Difference]: With dead ends: 49020 [2022-01-10 01:08:21,310 INFO L226 Difference]: Without dead ends: 35845 [2022-01-10 01:08:21,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:21,353 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 908 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:21,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 1704 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 01:08:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35845 states. [2022-01-10 01:08:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35845 to 26086. [2022-01-10 01:08:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26086 states, 23564 states have (on average 1.5104396537090476) internal successors, (35592), 23693 states have internal predecessors, (35592), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-01-10 01:08:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 41145 transitions. [2022-01-10 01:08:22,830 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 41145 transitions. Word has length 115 [2022-01-10 01:08:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:22,830 INFO L470 AbstractCegarLoop]: Abstraction has 26086 states and 41145 transitions. [2022-01-10 01:08:22,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 41145 transitions. [2022-01-10 01:08:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:22,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:22,910 INFO L514 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] [2022-01-10 01:08:22,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:08:22,910 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -737737052, now seen corresponding path program 1 times [2022-01-10 01:08:22,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:22,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690912407] [2022-01-10 01:08:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:22,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:22,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:22,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690912407] [2022-01-10 01:08:22,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690912407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:22,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:22,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:22,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041846022] [2022-01-10 01:08:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:22,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:22,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:22,993 INFO L87 Difference]: Start difference. First operand 26086 states and 41145 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:25,333 INFO L93 Difference]: Finished difference Result 59047 states and 94798 transitions. [2022-01-10 01:08:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:08:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:25,437 INFO L225 Difference]: With dead ends: 59047 [2022-01-10 01:08:25,437 INFO L226 Difference]: Without dead ends: 32975 [2022-01-10 01:08:25,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:08:25,487 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 610 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:25,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 854 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32975 states. [2022-01-10 01:08:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32975 to 26086. [2022-01-10 01:08:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26086 states, 23564 states have (on average 1.504965201154303) internal successors, (35463), 23693 states have internal predecessors, (35463), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-01-10 01:08:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 41016 transitions. [2022-01-10 01:08:27,022 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 41016 transitions. Word has length 115 [2022-01-10 01:08:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:27,023 INFO L470 AbstractCegarLoop]: Abstraction has 26086 states and 41016 transitions. [2022-01-10 01:08:27,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 41016 transitions. [2022-01-10 01:08:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:27,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:27,049 INFO L514 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] [2022-01-10 01:08:27,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:08:27,049 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:27,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1324013274, now seen corresponding path program 1 times [2022-01-10 01:08:27,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:27,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886956513] [2022-01-10 01:08:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:27,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:27,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886956513] [2022-01-10 01:08:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886956513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:27,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:27,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:27,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259834316] [2022-01-10 01:08:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:27,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:27,137 INFO L87 Difference]: Start difference. First operand 26086 states and 41016 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:30,108 INFO L93 Difference]: Finished difference Result 58011 states and 91569 transitions. [2022-01-10 01:08:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:08:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:30,209 INFO L225 Difference]: With dead ends: 58011 [2022-01-10 01:08:30,210 INFO L226 Difference]: Without dead ends: 31940 [2022-01-10 01:08:30,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:08:30,259 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 636 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:30,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1097 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:08:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31940 states. [2022-01-10 01:08:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31940 to 26089. [2022-01-10 01:08:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26089 states, 23567 states have (on average 1.499469597318284) internal successors, (35338), 23696 states have internal predecessors, (35338), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-01-10 01:08:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26089 states to 26089 states and 40891 transitions. [2022-01-10 01:08:31,690 INFO L78 Accepts]: Start accepts. Automaton has 26089 states and 40891 transitions. Word has length 115 [2022-01-10 01:08:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:31,690 INFO L470 AbstractCegarLoop]: Abstraction has 26089 states and 40891 transitions. [2022-01-10 01:08:31,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 26089 states and 40891 transitions. [2022-01-10 01:08:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:31,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:31,718 INFO L514 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] [2022-01-10 01:08:31,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:08:31,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -484979612, now seen corresponding path program 1 times [2022-01-10 01:08:31,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435147423] [2022-01-10 01:08:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:31,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:31,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435147423] [2022-01-10 01:08:31,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435147423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:31,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469465579] [2022-01-10 01:08:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:31,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:31,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:31,810 INFO L87 Difference]: Start difference. First operand 26089 states and 40891 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:36,704 INFO L93 Difference]: Finished difference Result 70813 states and 109620 transitions. [2022-01-10 01:08:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:36,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:36,848 INFO L225 Difference]: With dead ends: 70813 [2022-01-10 01:08:36,849 INFO L226 Difference]: Without dead ends: 44739 [2022-01-10 01:08:37,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:37,079 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 636 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:37,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1086 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:08:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44739 states. [2022-01-10 01:08:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44739 to 26476. [2022-01-10 01:08:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26476 states, 23954 states have (on average 1.491400183685397) internal successors, (35725), 24083 states have internal predecessors, (35725), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-01-10 01:08:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26476 states to 26476 states and 41278 transitions. [2022-01-10 01:08:38,816 INFO L78 Accepts]: Start accepts. Automaton has 26476 states and 41278 transitions. Word has length 115 [2022-01-10 01:08:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:38,816 INFO L470 AbstractCegarLoop]: Abstraction has 26476 states and 41278 transitions. [2022-01-10 01:08:38,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 26476 states and 41278 transitions. [2022-01-10 01:08:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:38,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:38,838 INFO L514 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] [2022-01-10 01:08:38,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:08:38,838 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:38,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash -408078814, now seen corresponding path program 1 times [2022-01-10 01:08:38,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:38,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738133488] [2022-01-10 01:08:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:38,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:38,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738133488] [2022-01-10 01:08:38,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738133488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:38,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:38,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:38,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332266987] [2022-01-10 01:08:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:38,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:38,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:38,940 INFO L87 Difference]: Start difference. First operand 26476 states and 41278 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:49,969 INFO L93 Difference]: Finished difference Result 152833 states and 243399 transitions. [2022-01-10 01:08:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:08:49,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-01-10 01:08:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:50,431 INFO L225 Difference]: With dead ends: 152833 [2022-01-10 01:08:50,431 INFO L226 Difference]: Without dead ends: 126372 [2022-01-10 01:08:50,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:50,560 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 2110 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:50,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2137 Valid, 1505 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 01:08:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126372 states. [2022-01-10 01:08:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126372 to 101836. [2022-01-10 01:08:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101836 states, 92022 states have (on average 1.4945773836691225) internal successors, (137534), 92793 states have internal predecessors, (137534), 6205 states have call successors, (6205), 3096 states have call predecessors, (6205), 3608 states have return successors, (17284), 6074 states have call predecessors, (17284), 6205 states have call successors, (17284) [2022-01-10 01:08:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101836 states to 101836 states and 161023 transitions. [2022-01-10 01:08:58,120 INFO L78 Accepts]: Start accepts. Automaton has 101836 states and 161023 transitions. Word has length 115 [2022-01-10 01:08:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:58,120 INFO L470 AbstractCegarLoop]: Abstraction has 101836 states and 161023 transitions. [2022-01-10 01:08:58,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 101836 states and 161023 transitions. [2022-01-10 01:08:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:08:58,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:58,146 INFO L514 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] [2022-01-10 01:08:58,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:08:58,146 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 498677633, now seen corresponding path program 1 times [2022-01-10 01:08:58,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:58,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265418249] [2022-01-10 01:08:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:58,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-10 01:08:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:08:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 01:08:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 01:08:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:58,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265418249] [2022-01-10 01:08:58,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265418249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:58,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:58,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506688201] [2022-01-10 01:08:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:58,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:58,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:58,222 INFO L87 Difference]: Start difference. First operand 101836 states and 161023 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)