./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:39:09,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:39:09,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:39:09,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:39:09,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:39:09,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:39:09,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:39:09,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:39:09,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:39:09,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:39:09,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:39:09,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:39:09,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:39:09,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:39:09,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:39:09,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:39:09,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:39:09,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:39:09,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:39:09,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:39:09,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:39:09,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:39:09,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:39:09,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:39:09,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:39:09,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:39:09,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:39:09,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:39:09,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:39:09,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:39:09,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:39:09,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:39:09,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:39:09,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:39:09,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:39:09,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:39:09,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:39:09,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:39:09,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:39:09,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:39:09,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:39:09,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:39:09,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:39:09,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:39:09,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:39:09,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:39:09,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:39:09,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:39:09,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:39:09,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:39:09,212 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:39:09,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:39:09,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:39:09,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:39:09,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:39:09,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:39:09,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:39:09,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:39:09,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:39:09,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:39:09,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:39:09,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:39:09,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:39:09,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:39:09,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:39:09,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:39:09,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:39:09,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:39:09,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:39:09,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:39:09,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:39:09,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-12-17 14:39:09,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:39:09,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:39:09,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:39:09,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:39:09,435 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:39:09,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-12-17 14:39:09,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ee9337b/32d6a5de0e834df18ba71879294db823/FLAGfca531902 [2021-12-17 14:39:09,882 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:39:09,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-12-17 14:39:09,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ee9337b/32d6a5de0e834df18ba71879294db823/FLAGfca531902 [2021-12-17 14:39:10,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ee9337b/32d6a5de0e834df18ba71879294db823 [2021-12-17 14:39:10,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:39:10,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:39:10,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:39:10,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:39:10,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:39:10,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671d068f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10, skipping insertion in model container [2021-12-17 14:39:10,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:39:10,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:39:10,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-12-17 14:39:10,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:39:10,636 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:39:10,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-12-17 14:39:10,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:39:10,764 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:39:10,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10 WrapperNode [2021-12-17 14:39:10,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:39:10,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:39:10,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:39:10,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:39:10,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,870 INFO L137 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 905 [2021-12-17 14:39:10,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:39:10,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:39:10,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:39:10,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:39:10,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:39:10,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:39:10,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:39:10,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:39:10,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (1/1) ... [2021-12-17 14:39:10,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:39:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:39:10,991 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) [2021-12-17 14:39:11,029 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 [2021-12-17 14:39:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:39:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:39:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:39:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-17 14:39:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-17 14:39:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:39:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:39:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:39:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:39:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:39:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:39:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:39:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:39:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:39:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:39:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:39:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:39:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-17 14:39:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-17 14:39:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:39:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:39:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:39:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:39:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:39:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:39:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:39:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:39:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-17 14:39:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-17 14:39:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:39:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:39:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:39:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:39:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:39:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:39:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:39:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:39:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:39:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:39:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:39:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-17 14:39:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-17 14:39:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:39:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:39:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:39:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:39:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:39:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:39:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:39:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:39:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:39:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:39:11,207 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:39:11,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:39:11,965 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:39:11,976 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:39:11,977 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:39:11,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:39:11 BoogieIcfgContainer [2021-12-17 14:39:11,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:39:11,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:39:11,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:39:11,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:39:11,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:39:10" (1/3) ... [2021-12-17 14:39:11,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7364f676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:39:11, skipping insertion in model container [2021-12-17 14:39:11,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:10" (2/3) ... [2021-12-17 14:39:11,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7364f676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:39:11, skipping insertion in model container [2021-12-17 14:39:11,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:39:11" (3/3) ... [2021-12-17 14:39:11,986 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2021-12-17 14:39:11,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:39:11,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:39:12,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:39:12,044 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 [2021-12-17 14:39:12,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:39:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-17 14:39:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 14:39:12,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:12,101 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] [2021-12-17 14:39:12,101 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:12,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2058097453, now seen corresponding path program 1 times [2021-12-17 14:39:12,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:12,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232253857] [2021-12-17 14:39:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:12,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:39:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 14:39:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:39:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:39:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:39:12,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232253857] [2021-12-17 14:39:12,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232253857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:12,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:12,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:39:12,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990598845] [2021-12-17 14:39:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:12,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:39:12,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:12,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:39:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:12,740 INFO L87 Difference]: Start difference. First operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-17 14:39:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:19,097 INFO L93 Difference]: Finished difference Result 1589 states and 2737 transitions. [2021-12-17 14:39:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:39:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-12-17 14:39:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:19,117 INFO L225 Difference]: With dead ends: 1589 [2021-12-17 14:39:19,117 INFO L226 Difference]: Without dead ends: 1029 [2021-12-17 14:39:19,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:39:19,130 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1543 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 5551 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 6272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 5551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:19,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 4057 Invalid, 6272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [721 Valid, 5551 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-17 14:39:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-12-17 14:39:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 567. [2021-12-17 14:39:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 448 states have (on average 1.6875) internal successors, (756), 467 states have internal predecessors, (756), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-12-17 14:39:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 941 transitions. [2021-12-17 14:39:19,260 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 941 transitions. Word has length 88 [2021-12-17 14:39:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:19,261 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 941 transitions. [2021-12-17 14:39:19,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-17 14:39:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 941 transitions. [2021-12-17 14:39:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 14:39:19,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:19,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:19,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 14:39:19,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1630565079, now seen corresponding path program 1 times [2021-12-17 14:39:19,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26088397] [2021-12-17 14:39:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:19,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:39:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 14:39:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:39:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:39:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:19,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:19,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26088397] [2021-12-17 14:39:19,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26088397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:19,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:19,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 14:39:19,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183338655] [2021-12-17 14:39:19,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:19,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 14:39:19,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:19,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 14:39:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-17 14:39:19,649 INFO L87 Difference]: Start difference. First operand 567 states and 941 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:26,293 INFO L93 Difference]: Finished difference Result 1417 states and 2393 transitions. [2021-12-17 14:39:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 14:39:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2021-12-17 14:39:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:26,322 INFO L225 Difference]: With dead ends: 1417 [2021-12-17 14:39:26,323 INFO L226 Difference]: Without dead ends: 868 [2021-12-17 14:39:26,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-12-17 14:39:26,329 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 1059 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 7537 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 7854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 7537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:26,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 6000 Invalid, 7854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [317 Valid, 7537 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-17 14:39:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-17 14:39:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 574. [2021-12-17 14:39:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6777041942604856) internal successors, (760), 472 states have internal predecessors, (760), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 950 transitions. [2021-12-17 14:39:26,419 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 950 transitions. Word has length 94 [2021-12-17 14:39:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:26,420 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 950 transitions. [2021-12-17 14:39:26,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 950 transitions. [2021-12-17 14:39:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 14:39:26,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:26,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:26,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 14:39:26,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash 133175324, now seen corresponding path program 1 times [2021-12-17 14:39:26,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:26,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874403310] [2021-12-17 14:39:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:26,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:39:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:39:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:26,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:26,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874403310] [2021-12-17 14:39:26,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874403310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:26,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:26,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:26,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307969360] [2021-12-17 14:39:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:26,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:26,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:26,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:26,775 INFO L87 Difference]: Start difference. First operand 574 states and 950 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:30,345 INFO L93 Difference]: Finished difference Result 1393 states and 2338 transitions. [2021-12-17 14:39:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2021-12-17 14:39:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:30,355 INFO L225 Difference]: With dead ends: 1393 [2021-12-17 14:39:30,356 INFO L226 Difference]: Without dead ends: 837 [2021-12-17 14:39:30,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:30,364 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 1431 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:30,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 2406 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:39:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-17 14:39:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 574. [2021-12-17 14:39:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6754966887417218) internal successors, (759), 472 states have internal predecessors, (759), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 949 transitions. [2021-12-17 14:39:30,422 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 949 transitions. Word has length 96 [2021-12-17 14:39:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:30,422 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 949 transitions. [2021-12-17 14:39:30,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 949 transitions. [2021-12-17 14:39:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 14:39:30,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:30,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:30,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 14:39:30,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1064055155, now seen corresponding path program 1 times [2021-12-17 14:39:30,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:30,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955429400] [2021-12-17 14:39:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:30,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:39:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:39:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:30,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955429400] [2021-12-17 14:39:30,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955429400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:30,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:30,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:30,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667579126] [2021-12-17 14:39:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:30,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:30,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:30,752 INFO L87 Difference]: Start difference. First operand 574 states and 949 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:34,633 INFO L93 Difference]: Finished difference Result 1393 states and 2337 transitions. [2021-12-17 14:39:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:34,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2021-12-17 14:39:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:34,638 INFO L225 Difference]: With dead ends: 1393 [2021-12-17 14:39:34,638 INFO L226 Difference]: Without dead ends: 837 [2021-12-17 14:39:34,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:34,641 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 990 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:34,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 2476 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:39:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-17 14:39:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 574. [2021-12-17 14:39:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6732891832229582) internal successors, (758), 472 states have internal predecessors, (758), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 948 transitions. [2021-12-17 14:39:34,679 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 948 transitions. Word has length 97 [2021-12-17 14:39:34,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:34,679 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 948 transitions. [2021-12-17 14:39:34,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 948 transitions. [2021-12-17 14:39:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 14:39:34,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:34,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 14:39:34,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -684945736, now seen corresponding path program 1 times [2021-12-17 14:39:34,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:34,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512146765] [2021-12-17 14:39:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:34,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:39:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:39:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:34,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:34,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512146765] [2021-12-17 14:39:34,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512146765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:34,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:34,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:34,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56901526] [2021-12-17 14:39:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:34,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:34,970 INFO L87 Difference]: Start difference. First operand 574 states and 948 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:38,358 INFO L93 Difference]: Finished difference Result 1393 states and 2336 transitions. [2021-12-17 14:39:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2021-12-17 14:39:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:38,363 INFO L225 Difference]: With dead ends: 1393 [2021-12-17 14:39:38,363 INFO L226 Difference]: Without dead ends: 837 [2021-12-17 14:39:38,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:38,365 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1878 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:38,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 2319 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-17 14:39:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-17 14:39:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 574. [2021-12-17 14:39:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6710816777041944) internal successors, (757), 472 states have internal predecessors, (757), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 947 transitions. [2021-12-17 14:39:38,404 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 947 transitions. Word has length 98 [2021-12-17 14:39:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:38,405 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 947 transitions. [2021-12-17 14:39:38,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:39:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 947 transitions. [2021-12-17 14:39:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 14:39:38,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:38,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:38,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 14:39:38,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1316060265, now seen corresponding path program 1 times [2021-12-17 14:39:38,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156919147] [2021-12-17 14:39:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:38,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:39:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:38,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:38,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156919147] [2021-12-17 14:39:38,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156919147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:38,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:38,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:39:38,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012759682] [2021-12-17 14:39:38,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:38,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:39:38,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:39:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:39:38,722 INFO L87 Difference]: Start difference. First operand 574 states and 947 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:42,839 INFO L93 Difference]: Finished difference Result 1361 states and 2271 transitions. [2021-12-17 14:39:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:39:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-17 14:39:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:42,847 INFO L225 Difference]: With dead ends: 1361 [2021-12-17 14:39:42,848 INFO L226 Difference]: Without dead ends: 845 [2021-12-17 14:39:42,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:39:42,850 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 1517 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 6364 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 4800 SdHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 6364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:42,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 4800 Invalid, 6876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 6364 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:39:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-17 14:39:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 574. [2021-12-17 14:39:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6600441501103753) internal successors, (752), 472 states have internal predecessors, (752), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 942 transitions. [2021-12-17 14:39:42,892 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 942 transitions. Word has length 99 [2021-12-17 14:39:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:42,892 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 942 transitions. [2021-12-17 14:39:42,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 942 transitions. [2021-12-17 14:39:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 14:39:42,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:42,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:42,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:39:42,895 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1964323336, now seen corresponding path program 1 times [2021-12-17 14:39:42,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:42,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112123251] [2021-12-17 14:39:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:42,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:43,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:43,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112123251] [2021-12-17 14:39:43,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112123251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:43,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:43,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:39:43,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325545625] [2021-12-17 14:39:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:43,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:39:43,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:39:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:39:43,216 INFO L87 Difference]: Start difference. First operand 574 states and 942 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:47,347 INFO L93 Difference]: Finished difference Result 1361 states and 2266 transitions. [2021-12-17 14:39:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:39:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-17 14:39:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:47,352 INFO L225 Difference]: With dead ends: 1361 [2021-12-17 14:39:47,352 INFO L226 Difference]: Without dead ends: 845 [2021-12-17 14:39:47,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:39:47,355 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1064 mSDsluCounter, 3992 mSDsCounter, 0 mSdLazyCounter, 6535 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 6875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 6535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:47,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 4918 Invalid, 6875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 6535 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-17 14:39:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-17 14:39:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 574. [2021-12-17 14:39:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6490066225165563) internal successors, (747), 472 states have internal predecessors, (747), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 937 transitions. [2021-12-17 14:39:47,435 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 937 transitions. Word has length 100 [2021-12-17 14:39:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:47,435 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 937 transitions. [2021-12-17 14:39:47,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 937 transitions. [2021-12-17 14:39:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 14:39:47,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:47,438 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:47,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:39:47,438 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash 625935886, now seen corresponding path program 1 times [2021-12-17 14:39:47,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:47,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020341940] [2021-12-17 14:39:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:47,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:39:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:47,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:47,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020341940] [2021-12-17 14:39:47,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020341940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:47,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:47,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:39:47,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106674181] [2021-12-17 14:39:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:47,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:39:47,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:39:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:39:47,725 INFO L87 Difference]: Start difference. First operand 574 states and 937 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:52,542 INFO L93 Difference]: Finished difference Result 1361 states and 2261 transitions. [2021-12-17 14:39:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:39:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2021-12-17 14:39:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:52,546 INFO L225 Difference]: With dead ends: 1361 [2021-12-17 14:39:52,546 INFO L226 Difference]: Without dead ends: 845 [2021-12-17 14:39:52,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:39:52,548 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 1063 mSDsluCounter, 4034 mSDsCounter, 0 mSdLazyCounter, 6490 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 6817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 6490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:52,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 4967 Invalid, 6817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 6490 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-17 14:39:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-17 14:39:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 574. [2021-12-17 14:39:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6379690949227372) internal successors, (742), 472 states have internal predecessors, (742), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 932 transitions. [2021-12-17 14:39:52,619 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 932 transitions. Word has length 101 [2021-12-17 14:39:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:52,619 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 932 transitions. [2021-12-17 14:39:52,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 932 transitions. [2021-12-17 14:39:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:39:52,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:52,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:52,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:39:52,622 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2125891725, now seen corresponding path program 1 times [2021-12-17 14:39:52,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817643713] [2021-12-17 14:39:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:52,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:39:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:52,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:52,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817643713] [2021-12-17 14:39:52,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817643713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:52,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:52,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:39:52,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751414814] [2021-12-17 14:39:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:52,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:39:52,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:52,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:39:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:39:52,927 INFO L87 Difference]: Start difference. First operand 574 states and 932 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:56,879 INFO L93 Difference]: Finished difference Result 1361 states and 2256 transitions. [2021-12-17 14:39:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:39:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2021-12-17 14:39:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:56,883 INFO L225 Difference]: With dead ends: 1361 [2021-12-17 14:39:56,883 INFO L226 Difference]: Without dead ends: 845 [2021-12-17 14:39:56,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:39:56,885 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1533 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 6207 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 4776 SdHoareTripleChecker+Invalid, 6693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 6207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:56,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 4776 Invalid, 6693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 6207 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:39:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-17 14:39:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 574. [2021-12-17 14:39:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.6269315673289184) internal successors, (737), 472 states have internal predecessors, (737), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:39:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 927 transitions. [2021-12-17 14:39:56,928 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 927 transitions. Word has length 102 [2021-12-17 14:39:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:56,928 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 927 transitions. [2021-12-17 14:39:56,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:39:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 927 transitions. [2021-12-17 14:39:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 14:39:56,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:56,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:56,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:39:56,931 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1736052946, now seen corresponding path program 1 times [2021-12-17 14:39:56,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:56,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18015292] [2021-12-17 14:39:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:56,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:39:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:39:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:39:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:39:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:39:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:39:57,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18015292] [2021-12-17 14:39:57,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18015292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:57,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:57,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:39:57,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549654211] [2021-12-17 14:39:57,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:57,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:39:57,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:39:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:57,227 INFO L87 Difference]: Start difference. First operand 574 states and 927 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:01,965 INFO L93 Difference]: Finished difference Result 1376 states and 2274 transitions. [2021-12-17 14:40:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2021-12-17 14:40:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:01,970 INFO L225 Difference]: With dead ends: 1376 [2021-12-17 14:40:01,983 INFO L226 Difference]: Without dead ends: 866 [2021-12-17 14:40:01,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:01,986 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 1040 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 4815 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:01,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3962 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 4815 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:40:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-17 14:40:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 576. [2021-12-17 14:40:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 455 states have (on average 1.6241758241758242) internal successors, (739), 474 states have internal predecessors, (739), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:40:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 929 transitions. [2021-12-17 14:40:02,056 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 929 transitions. Word has length 102 [2021-12-17 14:40:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:02,056 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 929 transitions. [2021-12-17 14:40:02,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 929 transitions. [2021-12-17 14:40:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 14:40:02,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:02,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:02,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:40:02,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1420176307, now seen corresponding path program 1 times [2021-12-17 14:40:02,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695205610] [2021-12-17 14:40:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:02,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:40:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:02,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695205610] [2021-12-17 14:40:02,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695205610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:02,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:02,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:40:02,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428279449] [2021-12-17 14:40:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:02,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:40:02,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:40:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:40:02,397 INFO L87 Difference]: Start difference. First operand 576 states and 929 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:06,534 INFO L93 Difference]: Finished difference Result 1367 states and 2257 transitions. [2021-12-17 14:40:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 14:40:06,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2021-12-17 14:40:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:06,538 INFO L225 Difference]: With dead ends: 1367 [2021-12-17 14:40:06,538 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:40:06,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:06,540 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 1975 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 6126 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 6753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 6126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:06,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 4738 Invalid, 6753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 6126 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:40:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:40:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 576. [2021-12-17 14:40:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 455 states have (on average 1.6131868131868132) internal successors, (734), 474 states have internal predecessors, (734), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:40:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 924 transitions. [2021-12-17 14:40:06,585 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 924 transitions. Word has length 103 [2021-12-17 14:40:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:06,585 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 924 transitions. [2021-12-17 14:40:06,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 924 transitions. [2021-12-17 14:40:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 14:40:06,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:06,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:06,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:40:06,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -702042960, now seen corresponding path program 1 times [2021-12-17 14:40:06,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932057348] [2021-12-17 14:40:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:06,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:40:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:06,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:06,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932057348] [2021-12-17 14:40:06,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932057348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:06,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:06,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:06,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115774540] [2021-12-17 14:40:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:06,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:06,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:06,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:06,913 INFO L87 Difference]: Start difference. First operand 576 states and 924 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:11,238 INFO L93 Difference]: Finished difference Result 1380 states and 2271 transitions. [2021-12-17 14:40:11,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2021-12-17 14:40:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:11,246 INFO L225 Difference]: With dead ends: 1380 [2021-12-17 14:40:11,246 INFO L226 Difference]: Without dead ends: 870 [2021-12-17 14:40:11,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:11,248 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 1046 mSDsluCounter, 3045 mSDsCounter, 0 mSdLazyCounter, 4747 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 3986 SdHoareTripleChecker+Invalid, 5039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 4747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:11,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 3986 Invalid, 5039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 4747 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-17 14:40:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-12-17 14:40:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 579. [2021-12-17 14:40:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 458 states have (on average 1.6091703056768558) internal successors, (737), 477 states have internal predecessors, (737), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:40:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 927 transitions. [2021-12-17 14:40:11,324 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 927 transitions. Word has length 103 [2021-12-17 14:40:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:11,325 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 927 transitions. [2021-12-17 14:40:11,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 927 transitions. [2021-12-17 14:40:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 14:40:11,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:11,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:11,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:40:11,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1058128658, now seen corresponding path program 1 times [2021-12-17 14:40:11,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:11,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352917496] [2021-12-17 14:40:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:11,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:11,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:11,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352917496] [2021-12-17 14:40:11,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352917496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:11,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:11,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:40:11,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698834903] [2021-12-17 14:40:11,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:11,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:40:11,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:40:11,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:40:11,626 INFO L87 Difference]: Start difference. First operand 579 states and 927 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:15,936 INFO L93 Difference]: Finished difference Result 1376 states and 2263 transitions. [2021-12-17 14:40:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-17 14:40:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:15,943 INFO L225 Difference]: With dead ends: 1376 [2021-12-17 14:40:15,943 INFO L226 Difference]: Without dead ends: 869 [2021-12-17 14:40:15,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:40:15,953 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1977 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 6126 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 6724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 6126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:15,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 4818 Invalid, 6724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 6126 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:40:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-12-17 14:40:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 590. [2021-12-17 14:40:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 466 states have (on average 1.6051502145922747) internal successors, (748), 487 states have internal predecessors, (748), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (98), 91 states have call predecessors, (98), 91 states have call successors, (98) [2021-12-17 14:40:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 942 transitions. [2021-12-17 14:40:16,062 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 942 transitions. Word has length 104 [2021-12-17 14:40:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:16,062 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 942 transitions. [2021-12-17 14:40:16,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 942 transitions. [2021-12-17 14:40:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 14:40:16,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:16,065 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:16,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:40:16,065 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 804856435, now seen corresponding path program 1 times [2021-12-17 14:40:16,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565832598] [2021-12-17 14:40:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:16,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:16,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:16,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565832598] [2021-12-17 14:40:16,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565832598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:16,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:16,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:16,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214018079] [2021-12-17 14:40:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:16,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:16,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:16,396 INFO L87 Difference]: Start difference. First operand 590 states and 942 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:20,623 INFO L93 Difference]: Finished difference Result 1403 states and 2298 transitions. [2021-12-17 14:40:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-17 14:40:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:20,628 INFO L225 Difference]: With dead ends: 1403 [2021-12-17 14:40:20,628 INFO L226 Difference]: Without dead ends: 890 [2021-12-17 14:40:20,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:20,631 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 1040 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 4752 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 4752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:20,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3958 Invalid, 5044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 4752 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 14:40:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-12-17 14:40:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 594. [2021-12-17 14:40:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 470 states have (on average 1.597872340425532) internal successors, (751), 491 states have internal predecessors, (751), 96 states have call successors, (96), 24 states have call predecessors, (96), 27 states have return successors, (98), 91 states have call predecessors, (98), 91 states have call successors, (98) [2021-12-17 14:40:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 945 transitions. [2021-12-17 14:40:20,699 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 945 transitions. Word has length 104 [2021-12-17 14:40:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:20,700 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 945 transitions. [2021-12-17 14:40:20,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 945 transitions. [2021-12-17 14:40:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 14:40:20,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:20,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:20,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:40:20,703 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1382493101, now seen corresponding path program 1 times [2021-12-17 14:40:20,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:20,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88353589] [2021-12-17 14:40:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:20,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:20,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88353589] [2021-12-17 14:40:20,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88353589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:20,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:20,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:40:20,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936074902] [2021-12-17 14:40:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:20,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:40:20,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:40:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:40:20,967 INFO L87 Difference]: Start difference. First operand 594 states and 945 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:40:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:23,817 INFO L93 Difference]: Finished difference Result 1441 states and 2337 transitions. [2021-12-17 14:40:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:40:23,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2021-12-17 14:40:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:23,828 INFO L225 Difference]: With dead ends: 1441 [2021-12-17 14:40:23,829 INFO L226 Difference]: Without dead ends: 845 [2021-12-17 14:40:23,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:23,833 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 1410 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:23,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 2330 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 14:40:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-17 14:40:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 575. [2021-12-17 14:40:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 454 states have (on average 1.605726872246696) internal successors, (729), 473 states have internal predecessors, (729), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:40:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 919 transitions. [2021-12-17 14:40:23,883 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 919 transitions. Word has length 104 [2021-12-17 14:40:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 919 transitions. [2021-12-17 14:40:23,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:40:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 919 transitions. [2021-12-17 14:40:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 14:40:23,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:23,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:40:23,885 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -208541675, now seen corresponding path program 1 times [2021-12-17 14:40:23,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:23,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014381538] [2021-12-17 14:40:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:23,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:40:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:24,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014381538] [2021-12-17 14:40:24,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014381538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:24,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:24,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:24,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078201210] [2021-12-17 14:40:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:24,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:24,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:24,175 INFO L87 Difference]: Start difference. First operand 575 states and 919 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:28,321 INFO L93 Difference]: Finished difference Result 1376 states and 2252 transitions. [2021-12-17 14:40:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:28,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2021-12-17 14:40:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:28,325 INFO L225 Difference]: With dead ends: 1376 [2021-12-17 14:40:28,325 INFO L226 Difference]: Without dead ends: 866 [2021-12-17 14:40:28,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:28,327 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 1462 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 4940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:28,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 3833 Invalid, 4940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 14:40:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-17 14:40:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 580. [2021-12-17 14:40:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 459 states have (on average 1.5991285403050108) internal successors, (734), 478 states have internal predecessors, (734), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-17 14:40:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 924 transitions. [2021-12-17 14:40:28,376 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 924 transitions. Word has length 105 [2021-12-17 14:40:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:28,376 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 924 transitions. [2021-12-17 14:40:28,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 924 transitions. [2021-12-17 14:40:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 14:40:28,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:28,379 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:28,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:40:28,379 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1778960440, now seen corresponding path program 1 times [2021-12-17 14:40:28,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763919555] [2021-12-17 14:40:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:28,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:40:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 14:40:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763919555] [2021-12-17 14:40:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763919555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:28,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:28,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:40:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635441013] [2021-12-17 14:40:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:40:28,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:40:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:40:28,708 INFO L87 Difference]: Start difference. First operand 580 states and 924 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:36,980 INFO L93 Difference]: Finished difference Result 2118 states and 3603 transitions. [2021-12-17 14:40:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 14:40:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2021-12-17 14:40:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:36,990 INFO L225 Difference]: With dead ends: 2118 [2021-12-17 14:40:36,990 INFO L226 Difference]: Without dead ends: 1616 [2021-12-17 14:40:36,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2021-12-17 14:40:36,993 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 3354 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 7126 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3432 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 8283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 7126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:36,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3432 Valid, 5620 Invalid, 8283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1157 Valid, 7126 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-17 14:40:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-12-17 14:40:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1088. [2021-12-17 14:40:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 857 states have (on average 1.6277712952158694) internal successors, (1395), 889 states have internal predecessors, (1395), 182 states have call successors, (182), 43 states have call predecessors, (182), 48 states have return successors, (219), 180 states have call predecessors, (219), 177 states have call successors, (219) [2021-12-17 14:40:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1796 transitions. [2021-12-17 14:40:37,104 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1796 transitions. Word has length 106 [2021-12-17 14:40:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1796 transitions. [2021-12-17 14:40:37,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1796 transitions. [2021-12-17 14:40:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 14:40:37,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:37,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:40:37,107 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash -210238076, now seen corresponding path program 1 times [2021-12-17 14:40:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:37,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085768932] [2021-12-17 14:40:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:37,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:40:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:40:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:40:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:37,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:37,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085768932] [2021-12-17 14:40:37,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085768932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:37,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:37,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 14:40:37,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684339168] [2021-12-17 14:40:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:37,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:40:37,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:40:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:40:37,411 INFO L87 Difference]: Start difference. First operand 1088 states and 1796 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:44,423 INFO L93 Difference]: Finished difference Result 3909 states and 6917 transitions. [2021-12-17 14:40:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:44,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 107 [2021-12-17 14:40:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:44,440 INFO L225 Difference]: With dead ends: 3909 [2021-12-17 14:40:44,441 INFO L226 Difference]: Without dead ends: 2900 [2021-12-17 14:40:44,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:40:44,447 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 2548 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 4937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:44,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2627 Valid, 3455 Invalid, 4937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-17 14:40:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2021-12-17 14:40:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2104. [2021-12-17 14:40:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1655 states have (on average 1.6422960725075528) internal successors, (2718), 1715 states have internal predecessors, (2718), 354 states have call successors, (354), 81 states have call predecessors, (354), 94 states have return successors, (486), 356 states have call predecessors, (486), 349 states have call successors, (486) [2021-12-17 14:40:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3558 transitions. [2021-12-17 14:40:44,707 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3558 transitions. Word has length 107 [2021-12-17 14:40:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 2104 states and 3558 transitions. [2021-12-17 14:40:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3558 transitions. [2021-12-17 14:40:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 14:40:44,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:44,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:44,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:40:44,711 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash -674941732, now seen corresponding path program 1 times [2021-12-17 14:40:44,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:44,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440826417] [2021-12-17 14:40:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:44,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:40:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:45,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:45,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440826417] [2021-12-17 14:40:45,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440826417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:45,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:45,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:40:45,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311152094] [2021-12-17 14:40:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:45,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:40:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:40:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:40:45,037 INFO L87 Difference]: Start difference. First operand 2104 states and 3558 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:51,932 INFO L93 Difference]: Finished difference Result 7714 states and 13795 transitions. [2021-12-17 14:40:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 14:40:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2021-12-17 14:40:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:51,962 INFO L225 Difference]: With dead ends: 7714 [2021-12-17 14:40:51,963 INFO L226 Difference]: Without dead ends: 5691 [2021-12-17 14:40:51,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2021-12-17 14:40:51,979 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 4231 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 6653 mSolverCounterSat, 1445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 8098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1445 IncrementalHoareTripleChecker+Valid, 6653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:51,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4310 Valid, 5305 Invalid, 8098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1445 Valid, 6653 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-17 14:40:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2021-12-17 14:40:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 4136. [2021-12-17 14:40:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 3255 states have (on average 1.6525345622119816) internal successors, (5379), 3367 states have internal predecessors, (5379), 694 states have call successors, (694), 153 states have call predecessors, (694), 186 states have return successors, (1000), 711 states have call predecessors, (1000), 689 states have call successors, (1000) [2021-12-17 14:40:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 7073 transitions. [2021-12-17 14:40:52,491 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 7073 transitions. Word has length 110 [2021-12-17 14:40:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:52,491 INFO L470 AbstractCegarLoop]: Abstraction has 4136 states and 7073 transitions. [2021-12-17 14:40:52,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 14:40:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 7073 transitions. [2021-12-17 14:40:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:40:52,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:52,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:52,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:40:52,495 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 692694141, now seen corresponding path program 1 times [2021-12-17 14:40:52,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:52,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095761047] [2021-12-17 14:40:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:52,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:40:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 14:40:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-17 14:40:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:40:52,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:52,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095761047] [2021-12-17 14:40:52,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095761047] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:40:52,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790041323] [2021-12-17 14:40:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:52,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:40:52,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:40:52,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:40:52,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:40:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:40:53,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:40:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 14:40:53,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:40:53,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790041323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:53,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:40:53,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-12-17 14:40:53,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606441761] [2021-12-17 14:40:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:53,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:40:53,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:40:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:40:53,210 INFO L87 Difference]: Start difference. First operand 4136 states and 7073 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:40:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:54,123 INFO L93 Difference]: Finished difference Result 11777 states and 20740 transitions. [2021-12-17 14:40:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:40:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-17 14:40:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:54,159 INFO L225 Difference]: With dead ends: 11777 [2021-12-17 14:40:54,160 INFO L226 Difference]: Without dead ends: 7722 [2021-12-17 14:40:54,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:40:54,180 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 858 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:54,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1767 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 14:40:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2021-12-17 14:40:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7703. [2021-12-17 14:40:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7703 states, 6044 states have (on average 1.641297154202515) internal successors, (9920), 6263 states have internal predecessors, (9920), 1298 states have call successors, (1298), 301 states have call predecessors, (1298), 360 states have return successors, (2076), 1330 states have call predecessors, (2076), 1293 states have call successors, (2076) [2021-12-17 14:40:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 13294 transitions. [2021-12-17 14:40:55,100 INFO L78 Accepts]: Start accepts. Automaton has 7703 states and 13294 transitions. Word has length 115 [2021-12-17 14:40:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:55,100 INFO L470 AbstractCegarLoop]: Abstraction has 7703 states and 13294 transitions. [2021-12-17 14:40:55,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 14:40:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 7703 states and 13294 transitions. [2021-12-17 14:40:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:40:55,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:55,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:55,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 14:40:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:40:55,320 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -584075837, now seen corresponding path program 1 times [2021-12-17 14:40:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684396173] [2021-12-17 14:40:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:55,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:40:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:40:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:40:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:40:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 14:40:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 14:40:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 14:40:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:40:55,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:55,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684396173] [2021-12-17 14:40:55,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684396173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:40:55,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954622663] [2021-12-17 14:40:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:55,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:40:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:40:55,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:40:55,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:40:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:40:55,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:40:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:40:56,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:40:56,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954622663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:56,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:40:56,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-17 14:40:56,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106121031] [2021-12-17 14:40:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:56,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:40:56,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:40:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:40:56,209 INFO L87 Difference]: Start difference. First operand 7703 states and 13294 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-17 14:40:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:59,452 INFO L93 Difference]: Finished difference Result 18752 states and 33361 transitions. [2021-12-17 14:40:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:40:59,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 116 [2021-12-17 14:40:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:59,596 INFO L225 Difference]: With dead ends: 18752 [2021-12-17 14:40:59,597 INFO L226 Difference]: Without dead ends: 12463 [2021-12-17 14:40:59,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:59,619 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 3105 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:59,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3183 Valid, 2871 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 14:40:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12463 states. [2021-12-17 14:41:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12463 to 12312. [2021-12-17 14:41:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12312 states, 9623 states have (on average 1.6082302816169594) internal successors, (15476), 9962 states have internal predecessors, (15476), 2067 states have call successors, (2067), 521 states have call predecessors, (2067), 621 states have return successors, (3745), 2117 states have call predecessors, (3745), 2062 states have call successors, (3745) [2021-12-17 14:41:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 21288 transitions. [2021-12-17 14:41:01,118 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 21288 transitions. Word has length 116 [2021-12-17 14:41:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:01,119 INFO L470 AbstractCegarLoop]: Abstraction has 12312 states and 21288 transitions. [2021-12-17 14:41:01,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-17 14:41:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 21288 transitions. [2021-12-17 14:41:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:41:01,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:01,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:01,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:41:01,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-17 14:41:01,335 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1507913644, now seen corresponding path program 1 times [2021-12-17 14:41:01,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:01,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426188260] [2021-12-17 14:41:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:01,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:41:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:41:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:41:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 14:41:01,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426188260] [2021-12-17 14:41:01,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426188260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925855408] [2021-12-17 14:41:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:01,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:01,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:41:01,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:41:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:01,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:41:01,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:41:02,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:41:02,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925855408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:02,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:41:02,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2021-12-17 14:41:02,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641466207] [2021-12-17 14:41:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:02,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:41:02,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:02,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:41:02,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:41:02,194 INFO L87 Difference]: Start difference. First operand 12312 states and 21288 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-17 14:41:05,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:05,843 INFO L93 Difference]: Finished difference Result 28005 states and 49704 transitions. [2021-12-17 14:41:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:41:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 122 [2021-12-17 14:41:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:05,929 INFO L225 Difference]: With dead ends: 28005 [2021-12-17 14:41:05,929 INFO L226 Difference]: Without dead ends: 17107 [2021-12-17 14:41:05,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-17 14:41:05,976 INFO L933 BasicCegarLoop]: 1469 mSDtfsCounter, 3090 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 3980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:05,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3170 Valid, 2608 Invalid, 3980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 14:41:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17107 states. [2021-12-17 14:41:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17107 to 16876. [2021-12-17 14:41:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16876 states, 13182 states have (on average 1.5933090578060993) internal successors, (21003), 13637 states have internal predecessors, (21003), 2826 states have call successors, (2826), 733 states have call predecessors, (2826), 867 states have return successors, (5654), 2890 states have call predecessors, (5654), 2821 states have call successors, (5654) [2021-12-17 14:41:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16876 states to 16876 states and 29483 transitions. [2021-12-17 14:41:08,384 INFO L78 Accepts]: Start accepts. Automaton has 16876 states and 29483 transitions. Word has length 122 [2021-12-17 14:41:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:08,384 INFO L470 AbstractCegarLoop]: Abstraction has 16876 states and 29483 transitions. [2021-12-17 14:41:08,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-17 14:41:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16876 states and 29483 transitions. [2021-12-17 14:41:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 14:41:08,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:08,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:08,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:41:08,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:08,603 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash -43778686, now seen corresponding path program 1 times [2021-12-17 14:41:08,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:08,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818081391] [2021-12-17 14:41:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:08,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:41:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:41:08,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818081391] [2021-12-17 14:41:08,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818081391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:08,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:41:08,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:41:08,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226195367] [2021-12-17 14:41:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:08,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:41:08,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:41:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:41:08,937 INFO L87 Difference]: Start difference. First operand 16876 states and 29483 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:41:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:16,412 INFO L93 Difference]: Finished difference Result 38334 states and 72483 transitions. [2021-12-17 14:41:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:41:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-17 14:41:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:16,582 INFO L225 Difference]: With dead ends: 38334 [2021-12-17 14:41:16,582 INFO L226 Difference]: Without dead ends: 21532 [2021-12-17 14:41:16,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:41:16,670 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 1412 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 4274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:16,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 3367 Invalid, 4274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-17 14:41:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21532 states. [2021-12-17 14:41:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21532 to 17068. [2021-12-17 14:41:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17068 states, 13326 states have (on average 1.5865976286957826) internal successors, (21143), 13781 states have internal predecessors, (21143), 2826 states have call successors, (2826), 781 states have call predecessors, (2826), 915 states have return successors, (5686), 2890 states have call predecessors, (5686), 2821 states have call successors, (5686) [2021-12-17 14:41:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17068 states to 17068 states and 29655 transitions. [2021-12-17 14:41:19,401 INFO L78 Accepts]: Start accepts. Automaton has 17068 states and 29655 transitions. Word has length 126 [2021-12-17 14:41:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:19,401 INFO L470 AbstractCegarLoop]: Abstraction has 17068 states and 29655 transitions. [2021-12-17 14:41:19,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:41:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17068 states and 29655 transitions. [2021-12-17 14:41:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 14:41:19,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:19,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:19,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 14:41:19,405 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1724581365, now seen corresponding path program 1 times [2021-12-17 14:41:19,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:19,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494935541] [2021-12-17 14:41:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:19,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 14:41:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:41:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:41:19,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494935541] [2021-12-17 14:41:19,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494935541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:19,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:41:19,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:41:19,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761518791] [2021-12-17 14:41:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:19,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:41:19,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:41:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:41:19,690 INFO L87 Difference]: Start difference. First operand 17068 states and 29655 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:41:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:32,809 INFO L93 Difference]: Finished difference Result 60497 states and 120379 transitions. [2021-12-17 14:41:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:41:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2021-12-17 14:41:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:33,202 INFO L225 Difference]: With dead ends: 60497 [2021-12-17 14:41:33,202 INFO L226 Difference]: Without dead ends: 43511 [2021-12-17 14:41:33,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:41:33,319 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 4566 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 1495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1495 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:33,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4645 Valid, 2588 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1495 Valid, 2806 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-17 14:41:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43511 states. [2021-12-17 14:41:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43511 to 34542. [2021-12-17 14:41:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34542 states, 26964 states have (on average 1.5752484794540869) internal successors, (42475), 27923 states have internal predecessors, (42475), 5706 states have call successors, (5706), 1557 states have call predecessors, (5706), 1871 states have return successors, (13219), 5830 states have call predecessors, (13219), 5701 states have call successors, (13219) [2021-12-17 14:41:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34542 states to 34542 states and 61400 transitions. [2021-12-17 14:41:38,647 INFO L78 Accepts]: Start accepts. Automaton has 34542 states and 61400 transitions. Word has length 124 [2021-12-17 14:41:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 34542 states and 61400 transitions. [2021-12-17 14:41:38,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 14:41:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 34542 states and 61400 transitions. [2021-12-17 14:41:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 14:41:38,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:38,651 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:38,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 14:41:38,652 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash 961870303, now seen corresponding path program 1 times [2021-12-17 14:41:38,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:38,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733055654] [2021-12-17 14:41:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:38,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:41:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 14:41:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:41:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 14:41:39,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:39,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733055654] [2021-12-17 14:41:39,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733055654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:39,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:41:39,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 14:41:39,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334627286] [2021-12-17 14:41:39,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:39,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 14:41:39,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 14:41:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:41:39,031 INFO L87 Difference]: Start difference. First operand 34542 states and 61400 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 11 states have internal predecessors, (96), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-17 14:42:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:42:15,066 INFO L93 Difference]: Finished difference Result 134684 states and 283858 transitions. [2021-12-17 14:42:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-17 14:42:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 11 states have internal predecessors, (96), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 125 [2021-12-17 14:42:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:42:16,318 INFO L225 Difference]: With dead ends: 134684 [2021-12-17 14:42:16,318 INFO L226 Difference]: Without dead ends: 100228 [2021-12-17 14:42:16,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=788, Invalid=3904, Unknown=0, NotChecked=0, Total=4692 [2021-12-17 14:42:16,612 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 7228 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 12856 mSolverCounterSat, 2750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7303 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 15606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2750 IncrementalHoareTripleChecker+Valid, 12856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:42:16,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7303 Valid, 6220 Invalid, 15606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2750 Valid, 12856 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2021-12-17 14:42:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100228 states.