./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_product11.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 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:43:01,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:43:01,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:43:01,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:43:01,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:43:01,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:43:01,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:43:01,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:43:01,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:43:01,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:43:01,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:43:01,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:43:01,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:43:01,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:43:01,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:43:01,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:43:01,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:43:01,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:43:01,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:43:01,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:43:01,168 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:43:01,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:43:01,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:43:01,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:43:01,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:43:01,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:43:01,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:43:01,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:43:01,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:43:01,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:43:01,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:43:01,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:43:01,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:43:01,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:43:01,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:43:01,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:43:01,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:43:01,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:43:01,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:43:01,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:43:01,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:43:01,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:43:01,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:43:01,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:43:01,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:43:01,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:43:01,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:43:01,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:43:01,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:43:01,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:43:01,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:43:01,211 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:43:01,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:43:01,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:43:01,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:43:01,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:43:01,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:43:01,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:43:01,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:43:01,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:43:01,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:43:01,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:43:01,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:43:01,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:43:01,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:43:01,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec [2022-07-12 05:43:01,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:43:01,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:43:01,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:43:01,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:43:01,466 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:43:01,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2022-07-12 05:43:01,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b8297c7/ff7d589945f64c4ca01e6d49bf18edc5/FLAGfc15141d3 [2022-07-12 05:43:01,998 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:43:01,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2022-07-12 05:43:02,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b8297c7/ff7d589945f64c4ca01e6d49bf18edc5/FLAGfc15141d3 [2022-07-12 05:43:02,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b8297c7/ff7d589945f64c4ca01e6d49bf18edc5 [2022-07-12 05:43:02,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:43:02,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:43:02,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:43:02,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:43:02,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:43:02,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14219806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02, skipping insertion in model container [2022-07-12 05:43:02,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:43:02,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:43:02,234 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_product11.cil.c[1545,1558] [2022-07-12 05:43:02,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:43:02,506 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:43:02,516 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_product11.cil.c[1545,1558] [2022-07-12 05:43:02,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:43:02,628 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:43:02,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02 WrapperNode [2022-07-12 05:43:02,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:43:02,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:43:02,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:43:02,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:43:02,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,726 INFO L137 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1129 [2022-07-12 05:43:02,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:43:02,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:43:02,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:43:02,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:43:02,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:43:02,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:43:02,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:43:02,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:43:02,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (1/1) ... [2022-07-12 05:43:02,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:43:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:43:02,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:43:02,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:43:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:43:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-12 05:43:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-12 05:43:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:43:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:43:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-12 05:43:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-12 05:43:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:43:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:43:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:43:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:43:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:43:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:43:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:43:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:43:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-12 05:43:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-12 05:43:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:43:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:43:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:43:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:43:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:43:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:43:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:43:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:43:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-12 05:43:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-12 05:43:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:43:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:43:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-12 05:43:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-12 05:43:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:43:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:43:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:43:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:43:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:43:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:43:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:43:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:43:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:43:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:43:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:43:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:43:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:43:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:43:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:43:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:43:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:43:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:43:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:43:03,029 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:43:03,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:43:03,861 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:43:03,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:43:03,873 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:43:03,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:43:03 BoogieIcfgContainer [2022-07-12 05:43:03,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:43:03,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:43:03,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:43:03,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:43:03,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:43:02" (1/3) ... [2022-07-12 05:43:03,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdbd70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:43:03, skipping insertion in model container [2022-07-12 05:43:03,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:43:02" (2/3) ... [2022-07-12 05:43:03,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdbd70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:43:03, skipping insertion in model container [2022-07-12 05:43:03,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:43:03" (3/3) ... [2022-07-12 05:43:03,882 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2022-07-12 05:43:03,894 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:43:03,894 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:43:03,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:43:03,943 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33e6ca4e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2544a3eb [2022-07-12 05:43:03,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:43:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 435 states have (on average 1.696551724137931) internal successors, (738), 456 states have internal predecessors, (738), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-12 05:43:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 05:43:03,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:03,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:03,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 352801324, now seen corresponding path program 1 times [2022-07-12 05:43:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:04,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800307008] [2022-07-12 05:43:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:43:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 05:43:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:04,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800307008] [2022-07-12 05:43:04,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800307008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:04,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:04,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:04,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647276329] [2022-07-12 05:43:04,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:04,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:04,845 INFO L87 Difference]: Start difference. First operand has 554 states, 435 states have (on average 1.696551724137931) internal successors, (738), 456 states have internal predecessors, (738), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:09,584 INFO L93 Difference]: Finished difference Result 1356 states and 2317 transitions. [2022-07-12 05:43:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:43:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-12 05:43:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:09,610 INFO L225 Difference]: With dead ends: 1356 [2022-07-12 05:43:09,610 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:09,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:09,626 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 983 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:09,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2402 Invalid, 2956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [269 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 05:43:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6923076923076923) internal successors, (726), 448 states have internal predecessors, (726), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 909 transitions. [2022-07-12 05:43:09,769 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 909 transitions. Word has length 102 [2022-07-12 05:43:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:09,770 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 909 transitions. [2022-07-12 05:43:09,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 909 transitions. [2022-07-12 05:43:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 05:43:09,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:09,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:09,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 05:43:09,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2003886984, now seen corresponding path program 1 times [2022-07-12 05:43:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:09,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106098161] [2022-07-12 05:43:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:43:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:10,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:10,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106098161] [2022-07-12 05:43:10,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106098161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:10,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:10,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688078795] [2022-07-12 05:43:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:10,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:10,152 INFO L87 Difference]: Start difference. First operand 546 states and 909 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:14,626 INFO L93 Difference]: Finished difference Result 1342 states and 2279 transitions. [2022-07-12 05:43:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:43:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-12 05:43:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:14,632 INFO L225 Difference]: With dead ends: 1342 [2022-07-12 05:43:14,633 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:14,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:14,635 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 1396 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:14,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2327 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 05:43:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.68997668997669) internal successors, (725), 448 states have internal predecessors, (725), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 908 transitions. [2022-07-12 05:43:14,677 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 908 transitions. Word has length 105 [2022-07-12 05:43:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:14,678 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 908 transitions. [2022-07-12 05:43:14,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 908 transitions. [2022-07-12 05:43:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 05:43:14,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:14,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:14,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 05:43:14,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2013499396, now seen corresponding path program 1 times [2022-07-12 05:43:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:14,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436217258] [2022-07-12 05:43:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:14,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:43:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:43:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:14,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:14,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436217258] [2022-07-12 05:43:14,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436217258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:14,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:14,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140033751] [2022-07-12 05:43:14,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:14,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:14,961 INFO L87 Difference]: Start difference. First operand 546 states and 908 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:18,674 INFO L93 Difference]: Finished difference Result 1342 states and 2278 transitions. [2022-07-12 05:43:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:43:18,674 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-12 05:43:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:18,679 INFO L225 Difference]: With dead ends: 1342 [2022-07-12 05:43:18,679 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:18,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:18,712 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 1401 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:18,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2330 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:43:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6876456876456876) internal successors, (724), 448 states have internal predecessors, (724), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 907 transitions. [2022-07-12 05:43:18,776 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 907 transitions. Word has length 106 [2022-07-12 05:43:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:18,777 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 907 transitions. [2022-07-12 05:43:18,777 INFO L496 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 907 transitions. [2022-07-12 05:43:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 05:43:18,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:18,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:18,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 05:43:18,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2055426172, now seen corresponding path program 1 times [2022-07-12 05:43:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:18,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42658449] [2022-07-12 05:43:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:43:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:43:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:19,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42658449] [2022-07-12 05:43:19,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42658449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:19,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:19,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293547979] [2022-07-12 05:43:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:19,129 INFO L87 Difference]: Start difference. First operand 546 states and 907 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:22,818 INFO L93 Difference]: Finished difference Result 1342 states and 2277 transitions. [2022-07-12 05:43:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:43:22,818 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-12 05:43:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:22,822 INFO L225 Difference]: With dead ends: 1342 [2022-07-12 05:43:22,822 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:22,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:22,825 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 1815 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:22,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 2261 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 05:43:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6853146853146854) internal successors, (723), 448 states have internal predecessors, (723), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 906 transitions. [2022-07-12 05:43:22,865 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 906 transitions. Word has length 107 [2022-07-12 05:43:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:22,866 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 906 transitions. [2022-07-12 05:43:22,866 INFO L496 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 906 transitions. [2022-07-12 05:43:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 05:43:22,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:22,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 05:43:22,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash 882810488, now seen corresponding path program 1 times [2022-07-12 05:43:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:22,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29458392] [2022-07-12 05:43:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:22,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 05:43:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:43:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:23,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:23,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29458392] [2022-07-12 05:43:23,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29458392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:23,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:23,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261258965] [2022-07-12 05:43:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:23,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:23,184 INFO L87 Difference]: Start difference. First operand 546 states and 906 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:27,315 INFO L93 Difference]: Finished difference Result 1342 states and 2276 transitions. [2022-07-12 05:43:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:43:27,316 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-12 05:43:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:27,319 INFO L225 Difference]: With dead ends: 1342 [2022-07-12 05:43:27,319 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:27,322 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 971 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:27,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2375 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 05:43:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.682983682983683) internal successors, (722), 448 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 905 transitions. [2022-07-12 05:43:27,366 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 905 transitions. Word has length 108 [2022-07-12 05:43:27,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:27,366 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 905 transitions. [2022-07-12 05:43:27,366 INFO L496 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:27,367 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 905 transitions. [2022-07-12 05:43:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 05:43:27,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:27,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:27,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 05:43:27,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1716833152, now seen corresponding path program 1 times [2022-07-12 05:43:27,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:27,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058063828] [2022-07-12 05:43:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:43:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:27,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058063828] [2022-07-12 05:43:27,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058063828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:27,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:27,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489560847] [2022-07-12 05:43:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:27,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:27,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:27,688 INFO L87 Difference]: Start difference. First operand 546 states and 905 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:31,188 INFO L93 Difference]: Finished difference Result 1302 states and 2200 transitions. [2022-07-12 05:43:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:43:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-12 05:43:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:31,193 INFO L225 Difference]: With dead ends: 1302 [2022-07-12 05:43:31,193 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:31,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:43:31,195 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1853 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:31,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 2208 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 05:43:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6713286713286712) internal successors, (717), 448 states have internal predecessors, (717), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 900 transitions. [2022-07-12 05:43:31,240 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 900 transitions. Word has length 109 [2022-07-12 05:43:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:31,240 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 900 transitions. [2022-07-12 05:43:31,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 900 transitions. [2022-07-12 05:43:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 05:43:31,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:31,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 05:43:31,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 773653238, now seen corresponding path program 1 times [2022-07-12 05:43:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:31,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005859196] [2022-07-12 05:43:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:43:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:31,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005859196] [2022-07-12 05:43:31,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005859196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:31,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:31,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138534260] [2022-07-12 05:43:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:31,510 INFO L87 Difference]: Start difference. First operand 546 states and 900 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:34,942 INFO L93 Difference]: Finished difference Result 1302 states and 2195 transitions. [2022-07-12 05:43:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:43:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-12 05:43:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:34,946 INFO L225 Difference]: With dead ends: 1302 [2022-07-12 05:43:34,946 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:43:34,953 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1862 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:34,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2180 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:43:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6596736596736597) internal successors, (712), 448 states have internal predecessors, (712), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 895 transitions. [2022-07-12 05:43:34,998 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 895 transitions. Word has length 110 [2022-07-12 05:43:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:34,998 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 895 transitions. [2022-07-12 05:43:34,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 895 transitions. [2022-07-12 05:43:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 05:43:35,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:35,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 05:43:35,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -151396923, now seen corresponding path program 1 times [2022-07-12 05:43:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:35,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665626038] [2022-07-12 05:43:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:43:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:35,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665626038] [2022-07-12 05:43:35,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665626038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:35,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:35,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276803054] [2022-07-12 05:43:35,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:35,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:35,323 INFO L87 Difference]: Start difference. First operand 546 states and 895 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:38,893 INFO L93 Difference]: Finished difference Result 1302 states and 2190 transitions. [2022-07-12 05:43:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:43:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-12 05:43:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:38,897 INFO L225 Difference]: With dead ends: 1302 [2022-07-12 05:43:38,897 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:38,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:43:38,899 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 1855 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:38,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 2202 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 05:43:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.648018648018648) internal successors, (707), 448 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 890 transitions. [2022-07-12 05:43:38,959 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 890 transitions. Word has length 111 [2022-07-12 05:43:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:38,960 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 890 transitions. [2022-07-12 05:43:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 890 transitions. [2022-07-12 05:43:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 05:43:38,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:38,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 05:43:38,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash -514424741, now seen corresponding path program 1 times [2022-07-12 05:43:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:38,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247417579] [2022-07-12 05:43:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:43:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:39,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247417579] [2022-07-12 05:43:39,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247417579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:39,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:39,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:39,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509526642] [2022-07-12 05:43:39,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:39,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:39,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:39,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:39,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:39,268 INFO L87 Difference]: Start difference. First operand 546 states and 890 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:42,533 INFO L93 Difference]: Finished difference Result 1302 states and 2185 transitions. [2022-07-12 05:43:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:43:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-12 05:43:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:42,537 INFO L225 Difference]: With dead ends: 1302 [2022-07-12 05:43:42,537 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:43:42,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:43:42,539 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1870 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:42,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 2217 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:43:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:43:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-12 05:43:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6363636363636365) internal successors, (702), 448 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 885 transitions. [2022-07-12 05:43:42,593 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 885 transitions. Word has length 112 [2022-07-12 05:43:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:42,594 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 885 transitions. [2022-07-12 05:43:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 885 transitions. [2022-07-12 05:43:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 05:43:42,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:42,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 05:43:42,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 124965308, now seen corresponding path program 1 times [2022-07-12 05:43:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535143494] [2022-07-12 05:43:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:43:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:42,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535143494] [2022-07-12 05:43:42,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535143494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:42,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:42,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263502222] [2022-07-12 05:43:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:42,924 INFO L87 Difference]: Start difference. First operand 546 states and 885 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:46,624 INFO L93 Difference]: Finished difference Result 1317 states and 2200 transitions. [2022-07-12 05:43:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:43:46,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-12 05:43:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:46,628 INFO L225 Difference]: With dead ends: 1317 [2022-07-12 05:43:46,628 INFO L226 Difference]: Without dead ends: 835 [2022-07-12 05:43:46,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:43:46,629 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1875 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:46,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 2207 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:43:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-12 05:43:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 548. [2022-07-12 05:43:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 431 states have (on average 1.6334106728538282) internal successors, (704), 450 states have internal predecessors, (704), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 887 transitions. [2022-07-12 05:43:46,692 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 887 transitions. Word has length 112 [2022-07-12 05:43:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:46,693 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 887 transitions. [2022-07-12 05:43:46,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 887 transitions. [2022-07-12 05:43:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 05:43:46,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:46,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 05:43:46,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash -634629110, now seen corresponding path program 1 times [2022-07-12 05:43:46,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:46,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147929473] [2022-07-12 05:43:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:43:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:46,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147929473] [2022-07-12 05:43:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147929473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:46,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:46,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429003483] [2022-07-12 05:43:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:46,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:46,983 INFO L87 Difference]: Start difference. First operand 548 states and 887 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:50,545 INFO L93 Difference]: Finished difference Result 1308 states and 2186 transitions. [2022-07-12 05:43:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:43:50,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-12 05:43:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:50,549 INFO L225 Difference]: With dead ends: 1308 [2022-07-12 05:43:50,549 INFO L226 Difference]: Without dead ends: 818 [2022-07-12 05:43:50,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:43:50,550 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1457 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:50,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 2237 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:43:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-12 05:43:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 548. [2022-07-12 05:43:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 431 states have (on average 1.6218097447795823) internal successors, (699), 450 states have internal predecessors, (699), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 882 transitions. [2022-07-12 05:43:50,623 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 882 transitions. Word has length 113 [2022-07-12 05:43:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:50,623 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 882 transitions. [2022-07-12 05:43:50,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 882 transitions. [2022-07-12 05:43:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 05:43:50,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:50,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:50,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 05:43:50,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1378714425, now seen corresponding path program 1 times [2022-07-12 05:43:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413182483] [2022-07-12 05:43:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:43:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:50,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413182483] [2022-07-12 05:43:50,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413182483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:50,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:50,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:43:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370629066] [2022-07-12 05:43:50,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:43:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:43:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:43:50,937 INFO L87 Difference]: Start difference. First operand 548 states and 882 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:55,206 INFO L93 Difference]: Finished difference Result 1321 states and 2197 transitions. [2022-07-12 05:43:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:43:55,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-12 05:43:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:55,210 INFO L225 Difference]: With dead ends: 1321 [2022-07-12 05:43:55,210 INFO L226 Difference]: Without dead ends: 839 [2022-07-12 05:43:55,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:43:55,212 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1032 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:55,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 2346 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 05:43:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-07-12 05:43:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 551. [2022-07-12 05:43:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6175115207373272) internal successors, (702), 453 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:43:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 885 transitions. [2022-07-12 05:43:55,285 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 885 transitions. Word has length 113 [2022-07-12 05:43:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:55,285 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 885 transitions. [2022-07-12 05:43:55,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:43:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 885 transitions. [2022-07-12 05:43:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 05:43:55,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:55,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 05:43:55,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1817241152, now seen corresponding path program 1 times [2022-07-12 05:43:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:55,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365633558] [2022-07-12 05:43:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:43:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:43:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:43:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:43:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:43:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:43:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:55,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365633558] [2022-07-12 05:43:55,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365633558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:55,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:55,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:43:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830735091] [2022-07-12 05:43:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:43:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:43:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:43:55,562 INFO L87 Difference]: Start difference. First operand 551 states and 885 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, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 05:44:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:00,903 INFO L93 Difference]: Finished difference Result 1325 states and 2203 transitions. [2022-07-12 05:44:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:44:00,904 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, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-07-12 05:44:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:00,921 INFO L225 Difference]: With dead ends: 1325 [2022-07-12 05:44:00,921 INFO L226 Difference]: Without dead ends: 846 [2022-07-12 05:44:00,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:44:00,923 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 1044 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 5241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:00,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 3792 Invalid, 5241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4969 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-12 05:44:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-12 05:44:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 562. [2022-07-12 05:44:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 442 states have (on average 1.6131221719457014) internal successors, (713), 463 states have internal predecessors, (713), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-12 05:44:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 900 transitions. [2022-07-12 05:44:00,993 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 900 transitions. Word has length 114 [2022-07-12 05:44:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:00,995 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 900 transitions. [2022-07-12 05:44:00,995 INFO L496 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, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 05:44:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 900 transitions. [2022-07-12 05:44:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 05:44:00,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:00,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 05:44:00,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash 416510945, now seen corresponding path program 1 times [2022-07-12 05:44:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667465206] [2022-07-12 05:44:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:44:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:44:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:44:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:44:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:44:01,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:01,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667465206] [2022-07-12 05:44:01,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667465206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:01,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:01,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:44:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279986939] [2022-07-12 05:44:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:01,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:44:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:44:01,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:44:01,311 INFO L87 Difference]: Start difference. First operand 562 states and 900 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, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:05,108 INFO L93 Difference]: Finished difference Result 1348 states and 2234 transitions. [2022-07-12 05:44:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:44:05,109 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, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-12 05:44:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:05,112 INFO L225 Difference]: With dead ends: 1348 [2022-07-12 05:44:05,112 INFO L226 Difference]: Without dead ends: 863 [2022-07-12 05:44:05,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:44:05,114 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1450 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:05,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 2288 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:44:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-07-12 05:44:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 566. [2022-07-12 05:44:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 446 states have (on average 1.6053811659192825) internal successors, (716), 467 states have internal predecessors, (716), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-12 05:44:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 903 transitions. [2022-07-12 05:44:05,180 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 903 transitions. Word has length 114 [2022-07-12 05:44:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:05,180 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 903 transitions. [2022-07-12 05:44:05,180 INFO L496 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, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 903 transitions. [2022-07-12 05:44:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 05:44:05,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:05,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 05:44:05,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1016705599, now seen corresponding path program 1 times [2022-07-12 05:44:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:05,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414370560] [2022-07-12 05:44:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:44:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:44:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:44:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:44:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:44:05,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:05,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414370560] [2022-07-12 05:44:05,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414370560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:05,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:05,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:44:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370921498] [2022-07-12 05:44:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:05,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:44:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:44:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:44:05,453 INFO L87 Difference]: Start difference. First operand 566 states and 903 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:09,981 INFO L93 Difference]: Finished difference Result 1390 states and 2277 transitions. [2022-07-12 05:44:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:44:09,982 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-12 05:44:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:09,986 INFO L225 Difference]: With dead ends: 1390 [2022-07-12 05:44:09,987 INFO L226 Difference]: Without dead ends: 822 [2022-07-12 05:44:09,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:44:09,989 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 944 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:09,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2327 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 05:44:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-07-12 05:44:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 547. [2022-07-12 05:44:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 430 states have (on average 1.613953488372093) internal successors, (694), 449 states have internal predecessors, (694), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:44:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 877 transitions. [2022-07-12 05:44:10,083 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 877 transitions. Word has length 114 [2022-07-12 05:44:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:10,083 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 877 transitions. [2022-07-12 05:44:10,083 INFO L496 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, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 877 transitions. [2022-07-12 05:44:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 05:44:10,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:10,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:10,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 05:44:10,087 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1398579404, now seen corresponding path program 1 times [2022-07-12 05:44:10,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:10,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600774578] [2022-07-12 05:44:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:44:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:44:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:44:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:44:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:44:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:10,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600774578] [2022-07-12 05:44:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600774578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:10,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:44:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785876374] [2022-07-12 05:44:10,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:44:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:44:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:44:10,380 INFO L87 Difference]: Start difference. First operand 547 states and 877 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:14,362 INFO L93 Difference]: Finished difference Result 1325 states and 2192 transitions. [2022-07-12 05:44:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:44:14,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-12 05:44:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:14,367 INFO L225 Difference]: With dead ends: 1325 [2022-07-12 05:44:14,367 INFO L226 Difference]: Without dead ends: 843 [2022-07-12 05:44:14,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:44:14,369 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1421 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:14,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 2257 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:44:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-12 05:44:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 552. [2022-07-12 05:44:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.606896551724138) internal successors, (699), 454 states have internal predecessors, (699), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:44:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 882 transitions. [2022-07-12 05:44:14,440 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 882 transitions. Word has length 115 [2022-07-12 05:44:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:14,440 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 882 transitions. [2022-07-12 05:44:14,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 882 transitions. [2022-07-12 05:44:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 05:44:14,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:14,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:14,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 05:44:14,444 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash 744382804, now seen corresponding path program 1 times [2022-07-12 05:44:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:14,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552497557] [2022-07-12 05:44:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:44:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:44:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:44:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:44:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552497557] [2022-07-12 05:44:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552497557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:14,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:14,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:44:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134463492] [2022-07-12 05:44:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:14,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:44:14,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:44:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:44:14,731 INFO L87 Difference]: Start difference. First operand 552 states and 882 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:18,284 INFO L93 Difference]: Finished difference Result 1323 states and 2187 transitions. [2022-07-12 05:44:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 05:44:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-07-12 05:44:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:18,288 INFO L225 Difference]: With dead ends: 1323 [2022-07-12 05:44:18,288 INFO L226 Difference]: Without dead ends: 820 [2022-07-12 05:44:18,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:44:18,290 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1802 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:18,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 2216 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 05:44:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-12 05:44:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 552. [2022-07-12 05:44:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.5977011494252873) internal successors, (695), 454 states have internal predecessors, (695), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-12 05:44:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 878 transitions. [2022-07-12 05:44:18,370 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 878 transitions. Word has length 116 [2022-07-12 05:44:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:18,371 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 878 transitions. [2022-07-12 05:44:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 878 transitions. [2022-07-12 05:44:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 05:44:18,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:18,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:18,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 05:44:18,373 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:18,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:18,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1592009706, now seen corresponding path program 1 times [2022-07-12 05:44:18,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:18,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171754628] [2022-07-12 05:44:18,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:18,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:44:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:44:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:44:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:44:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:18,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171754628] [2022-07-12 05:44:18,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171754628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:18,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:18,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 05:44:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945225740] [2022-07-12 05:44:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:18,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 05:44:18,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 05:44:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:44:18,738 INFO L87 Difference]: Start difference. First operand 552 states and 878 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:44:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:27,742 INFO L93 Difference]: Finished difference Result 1566 states and 2718 transitions. [2022-07-12 05:44:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 05:44:27,743 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-07-12 05:44:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:27,747 INFO L225 Difference]: With dead ends: 1566 [2022-07-12 05:44:27,747 INFO L226 Difference]: Without dead ends: 1092 [2022-07-12 05:44:27,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-07-12 05:44:27,749 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 3553 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 9905 mSolverCounterSat, 1812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 11717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1812 IncrementalHoareTripleChecker+Valid, 9905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:27,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 4348 Invalid, 11717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1812 Valid, 9905 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-12 05:44:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-07-12 05:44:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 561. [2022-07-12 05:44:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 442 states have (on average 1.588235294117647) internal successors, (702), 460 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (108), 90 states have call predecessors, (108), 89 states have call successors, (108) [2022-07-12 05:44:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 904 transitions. [2022-07-12 05:44:27,839 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 904 transitions. Word has length 116 [2022-07-12 05:44:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:27,839 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 904 transitions. [2022-07-12 05:44:27,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:44:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 904 transitions. [2022-07-12 05:44:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 05:44:27,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:27,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:27,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 05:44:27,841 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1887013128, now seen corresponding path program 1 times [2022-07-12 05:44:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:27,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101577642] [2022-07-12 05:44:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:27,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 05:44:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 05:44:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 05:44:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:44:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:44:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101577642] [2022-07-12 05:44:28,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101577642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:44:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288300262] [2022-07-12 05:44:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:44:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:44:28,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:44:28,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:44:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:28,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:44:28,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:44:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:44:28,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:44:28,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288300262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:28,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:44:28,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-12 05:44:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279484516] [2022-07-12 05:44:28,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:28,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:44:28,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:44:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:44:28,583 INFO L87 Difference]: Start difference. First operand 561 states and 904 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:29,004 INFO L93 Difference]: Finished difference Result 1054 states and 1764 transitions. [2022-07-12 05:44:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:29,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 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 117 [2022-07-12 05:44:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:29,008 INFO L225 Difference]: With dead ends: 1054 [2022-07-12 05:44:29,008 INFO L226 Difference]: Without dead ends: 571 [2022-07-12 05:44:29,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:44:29,010 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 824 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:29,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2171 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:44:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-12 05:44:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2022-07-12 05:44:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 449 states have (on average 1.5902004454342984) internal successors, (714), 467 states have internal predecessors, (714), 94 states have call successors, (94), 24 states have call predecessors, (94), 25 states have return successors, (103), 90 states have call predecessors, (103), 89 states have call successors, (103) [2022-07-12 05:44:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 911 transitions. [2022-07-12 05:44:29,110 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 911 transitions. Word has length 117 [2022-07-12 05:44:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:29,110 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 911 transitions. [2022-07-12 05:44:29,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 911 transitions. [2022-07-12 05:44:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 05:44:29,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:29,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:29,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 05:44:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:44:29,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1198584433, now seen corresponding path program 1 times [2022-07-12 05:44:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:29,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726040584] [2022-07-12 05:44:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:44:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:44:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 05:44:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:44:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:44:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726040584] [2022-07-12 05:44:29,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726040584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:44:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965338673] [2022-07-12 05:44:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:44:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:44:29,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:44:29,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:44:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:29,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:44:29,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:44:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:44:30,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:44:30,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965338673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:30,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:44:30,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-12 05:44:30,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283568581] [2022-07-12 05:44:30,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:30,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:44:30,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:44:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:44:30,066 INFO L87 Difference]: Start difference. First operand 569 states and 911 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:30,512 INFO L93 Difference]: Finished difference Result 1070 states and 1762 transitions. [2022-07-12 05:44:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 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 122 [2022-07-12 05:44:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:30,515 INFO L225 Difference]: With dead ends: 1070 [2022-07-12 05:44:30,515 INFO L226 Difference]: Without dead ends: 579 [2022-07-12 05:44:30,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:44:30,517 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 811 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:30,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2171 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:44:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-07-12 05:44:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2022-07-12 05:44:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 457 states have (on average 1.5908096280087527) internal successors, (727), 476 states have internal predecessors, (727), 94 states have call successors, (94), 25 states have call predecessors, (94), 27 states have return successors, (104), 90 states have call predecessors, (104), 89 states have call successors, (104) [2022-07-12 05:44:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 925 transitions. [2022-07-12 05:44:30,593 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 925 transitions. Word has length 122 [2022-07-12 05:44:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:30,593 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 925 transitions. [2022-07-12 05:44:30,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 925 transitions. [2022-07-12 05:44:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 05:44:30,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:30,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:30,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:44:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-12 05:44:30,811 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1804262813, now seen corresponding path program 1 times [2022-07-12 05:44:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:30,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247916297] [2022-07-12 05:44:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:44:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:44:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:44:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:44:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:44:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:31,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247916297] [2022-07-12 05:44:31,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247916297] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:44:31,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511463421] [2022-07-12 05:44:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:44:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:44:31,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:44:31,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:44:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:44:31,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:44:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:44:31,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:44:31,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511463421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:31,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:44:31,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-12 05:44:31,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603456838] [2022-07-12 05:44:31,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:31,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:44:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:44:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:44:31,486 INFO L87 Difference]: Start difference. First operand 579 states and 925 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:31,866 INFO L93 Difference]: Finished difference Result 1090 states and 1787 transitions. [2022-07-12 05:44:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:31,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 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 123 [2022-07-12 05:44:31,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:31,870 INFO L225 Difference]: With dead ends: 1090 [2022-07-12 05:44:31,870 INFO L226 Difference]: Without dead ends: 589 [2022-07-12 05:44:31,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:44:31,872 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 820 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:31,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 2171 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:44:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-12 05:44:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-07-12 05:44:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 465 states have (on average 1.5913978494623655) internal successors, (740), 485 states have internal predecessors, (740), 94 states have call successors, (94), 26 states have call predecessors, (94), 29 states have return successors, (105), 90 states have call predecessors, (105), 89 states have call successors, (105) [2022-07-12 05:44:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 939 transitions. [2022-07-12 05:44:31,951 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 939 transitions. Word has length 123 [2022-07-12 05:44:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:31,952 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 939 transitions. [2022-07-12 05:44:31,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:44:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 939 transitions. [2022-07-12 05:44:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 05:44:31,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:31,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:31,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 05:44:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:44:32,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1252982550, now seen corresponding path program 1 times [2022-07-12 05:44:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:32,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980855431] [2022-07-12 05:44:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:44:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:44:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:44:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 05:44:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980855431] [2022-07-12 05:44:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980855431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:32,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 05:44:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596857258] [2022-07-12 05:44:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 05:44:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 05:44:32,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:44:32,527 INFO L87 Difference]: Start difference. First operand 589 states and 939 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:44:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:49,089 INFO L93 Difference]: Finished difference Result 2568 states and 4521 transitions. [2022-07-12 05:44:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 05:44:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-07-12 05:44:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:49,102 INFO L225 Difference]: With dead ends: 2568 [2022-07-12 05:44:49,102 INFO L226 Difference]: Without dead ends: 2057 [2022-07-12 05:44:49,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 05:44:49,107 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 6694 mSDsluCounter, 7080 mSDsCounter, 0 mSdLazyCounter, 18659 mSolverCounterSat, 3265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6700 SdHoareTripleChecker+Valid, 8979 SdHoareTripleChecker+Invalid, 21924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3265 IncrementalHoareTripleChecker+Valid, 18659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:49,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6700 Valid, 8979 Invalid, 21924 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3265 Valid, 18659 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-12 05:44:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-07-12 05:44:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1203. [2022-07-12 05:44:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 923 states have (on average 1.61863488624052) internal successors, (1494), 968 states have internal predecessors, (1494), 219 states have call successors, (219), 48 states have call predecessors, (219), 60 states have return successors, (267), 217 states have call predecessors, (267), 214 states have call successors, (267) [2022-07-12 05:44:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1980 transitions. [2022-07-12 05:44:49,365 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1980 transitions. Word has length 124 [2022-07-12 05:44:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:49,365 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1980 transitions. [2022-07-12 05:44:49,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:44:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1980 transitions. [2022-07-12 05:44:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 05:44:49,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:49,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 05:44:49,369 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1856892251, now seen corresponding path program 1 times [2022-07-12 05:44:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:49,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485015623] [2022-07-12 05:44:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:44:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:44:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:44:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:44:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 05:44:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485015623] [2022-07-12 05:44:49,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485015623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:49,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:49,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:44:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558386501] [2022-07-12 05:44:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:49,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:44:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:44:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:44:49,628 INFO L87 Difference]: Start difference. First operand 1203 states and 1980 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:53,930 INFO L93 Difference]: Finished difference Result 2856 states and 4884 transitions. [2022-07-12 05:44:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 05:44:53,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-12 05:44:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:53,940 INFO L225 Difference]: With dead ends: 2856 [2022-07-12 05:44:53,940 INFO L226 Difference]: Without dead ends: 1766 [2022-07-12 05:44:53,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:44:53,944 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 961 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:53,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2410 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 05:44:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-07-12 05:44:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1209. [2022-07-12 05:44:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 929 states have (on average 1.6146393972012918) internal successors, (1500), 974 states have internal predecessors, (1500), 219 states have call successors, (219), 48 states have call predecessors, (219), 60 states have return successors, (267), 217 states have call predecessors, (267), 214 states have call successors, (267) [2022-07-12 05:44:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1986 transitions. [2022-07-12 05:44:54,183 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1986 transitions. Word has length 124 [2022-07-12 05:44:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:54,183 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1986 transitions. [2022-07-12 05:44:54,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 05:44:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1986 transitions. [2022-07-12 05:44:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 05:44:54,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:54,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:44:54,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 05:44:54,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2080051492, now seen corresponding path program 1 times [2022-07-12 05:44:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66243891] [2022-07-12 05:44:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:44:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:44:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:44:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:44:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:44:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:44:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:54,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66243891] [2022-07-12 05:44:54,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66243891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:54,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:54,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 05:44:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965610192] [2022-07-12 05:44:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:54,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:44:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:44:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:44:54,526 INFO L87 Difference]: Start difference. First operand 1209 states and 1986 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 05:45:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:01,052 INFO L93 Difference]: Finished difference Result 3374 states and 5932 transitions. [2022-07-12 05:45:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:45:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2022-07-12 05:45:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:01,063 INFO L225 Difference]: With dead ends: 3374 [2022-07-12 05:45:01,063 INFO L226 Difference]: Without dead ends: 2258 [2022-07-12 05:45:01,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:45:01,068 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 3015 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 5836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:01,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 3871 Invalid, 5836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-12 05:45:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-07-12 05:45:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1219. [2022-07-12 05:45:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 937 states have (on average 1.6093916755602988) internal successors, (1508), 982 states have internal predecessors, (1508), 219 states have call successors, (219), 48 states have call predecessors, (219), 62 states have return successors, (270), 219 states have call predecessors, (270), 214 states have call successors, (270) [2022-07-12 05:45:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1997 transitions. [2022-07-12 05:45:01,323 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1997 transitions. Word has length 130 [2022-07-12 05:45:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:01,323 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1997 transitions. [2022-07-12 05:45:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 05:45:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1997 transitions. [2022-07-12 05:45:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 05:45:01,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:01,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:01,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 05:45:01,336 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1755606991, now seen corresponding path program 1 times [2022-07-12 05:45:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:01,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067131247] [2022-07-12 05:45:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:45:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:45:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:45:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:45:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 05:45:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:01,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067131247] [2022-07-12 05:45:01,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067131247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:01,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:01,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:45:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894668861] [2022-07-12 05:45:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:45:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:45:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:45:01,631 INFO L87 Difference]: Start difference. First operand 1219 states and 1997 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 05:45:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:06,528 INFO L93 Difference]: Finished difference Result 1994 states and 3331 transitions. [2022-07-12 05:45:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:45:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2022-07-12 05:45:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:06,533 INFO L225 Difference]: With dead ends: 1994 [2022-07-12 05:45:06,533 INFO L226 Difference]: Without dead ends: 839 [2022-07-12 05:45:06,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:45:06,537 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1367 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:06,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 3671 Invalid, 5022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 05:45:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-07-12 05:45:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 574. [2022-07-12 05:45:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.596026490066225) internal successors, (723), 475 states have internal predecessors, (723), 91 states have call successors, (91), 26 states have call predecessors, (91), 29 states have return successors, (102), 85 states have call predecessors, (102), 86 states have call successors, (102) [2022-07-12 05:45:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 916 transitions. [2022-07-12 05:45:06,638 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 916 transitions. Word has length 130 [2022-07-12 05:45:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:06,638 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 916 transitions. [2022-07-12 05:45:06,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 05:45:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 916 transitions. [2022-07-12 05:45:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 05:45:06,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:06,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:06,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 05:45:06,640 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash -9124150, now seen corresponding path program 1 times [2022-07-12 05:45:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:06,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558445646] [2022-07-12 05:45:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:06,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:45:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:45:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:45:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:06,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558445646] [2022-07-12 05:45:06,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558445646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:06,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:06,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:45:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46774184] [2022-07-12 05:45:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:06,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:45:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:45:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:45:06,947 INFO L87 Difference]: Start difference. First operand 574 states and 916 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 05:45:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:16,204 INFO L93 Difference]: Finished difference Result 2101 states and 3603 transitions. [2022-07-12 05:45:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 05:45:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2022-07-12 05:45:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:16,212 INFO L225 Difference]: With dead ends: 2101 [2022-07-12 05:45:16,212 INFO L226 Difference]: Without dead ends: 1599 [2022-07-12 05:45:16,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-07-12 05:45:16,214 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 4115 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 5753 mSolverCounterSat, 1491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1491 IncrementalHoareTripleChecker+Valid, 5753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:16,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 3863 Invalid, 7244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1491 Valid, 5753 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-12 05:45:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-07-12 05:45:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1123. [2022-07-12 05:45:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 884 states have (on average 1.6289592760180995) internal successors, (1440), 922 states have internal predecessors, (1440), 180 states have call successors, (180), 46 states have call predecessors, (180), 58 states have return successors, (220), 178 states have call predecessors, (220), 175 states have call successors, (220) [2022-07-12 05:45:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1840 transitions. [2022-07-12 05:45:16,445 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1840 transitions. Word has length 133 [2022-07-12 05:45:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:16,446 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1840 transitions. [2022-07-12 05:45:16,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 05:45:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1840 transitions. [2022-07-12 05:45:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 05:45:16,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:16,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 05:45:16,448 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 447050291, now seen corresponding path program 1 times [2022-07-12 05:45:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772546723] [2022-07-12 05:45:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:45:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:45:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 05:45:16,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:16,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772546723] [2022-07-12 05:45:16,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772546723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:45:16,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381438868] [2022-07-12 05:45:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:16,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:45:16,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:45:16,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:45:16,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:45:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:16,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:45:16,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:45:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:45:16,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:45:16,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381438868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:16,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:45:16,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-07-12 05:45:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516379291] [2022-07-12 05:45:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:16,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:45:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:45:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:45:16,996 INFO L87 Difference]: Start difference. First operand 1123 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:45:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:17,523 INFO L93 Difference]: Finished difference Result 3107 states and 5175 transitions. [2022-07-12 05:45:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:45:17,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2022-07-12 05:45:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:17,533 INFO L225 Difference]: With dead ends: 3107 [2022-07-12 05:45:17,534 INFO L226 Difference]: Without dead ends: 2056 [2022-07-12 05:45:17,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:45:17,538 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 771 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:17,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1696 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:45:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-07-12 05:45:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2040. [2022-07-12 05:45:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1599 states have (on average 1.6222639149468419) internal successors, (2594), 1670 states have internal predecessors, (2594), 330 states have call successors, (330), 87 states have call predecessors, (330), 110 states have return successors, (411), 330 states have call predecessors, (411), 325 states have call successors, (411) [2022-07-12 05:45:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3335 transitions. [2022-07-12 05:45:17,959 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3335 transitions. Word has length 137 [2022-07-12 05:45:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 3335 transitions. [2022-07-12 05:45:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 05:45:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3335 transitions. [2022-07-12 05:45:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 05:45:17,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:17,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:17,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:45:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 05:45:18,162 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2056224795, now seen corresponding path program 1 times [2022-07-12 05:45:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:18,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344690151] [2022-07-12 05:45:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:18,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:45:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:45:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:45:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:18,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344690151] [2022-07-12 05:45:18,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344690151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:18,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:18,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:45:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712660218] [2022-07-12 05:45:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:45:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:45:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:45:18,475 INFO L87 Difference]: Start difference. First operand 2040 states and 3335 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 05:45:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:28,988 INFO L93 Difference]: Finished difference Result 5293 states and 9000 transitions. [2022-07-12 05:45:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:45:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2022-07-12 05:45:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:29,002 INFO L225 Difference]: With dead ends: 5293 [2022-07-12 05:45:29,002 INFO L226 Difference]: Without dead ends: 3649 [2022-07-12 05:45:29,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:45:29,009 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 3582 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 4851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:29,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3654 Valid, 1934 Invalid, 4851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-12 05:45:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-07-12 05:45:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 2780. [2022-07-12 05:45:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2181 states have (on average 1.6047684548372305) internal successors, (3500), 2270 states have internal predecessors, (3500), 436 states have call successors, (436), 133 states have call predecessors, (436), 162 states have return successors, (563), 436 states have call predecessors, (563), 431 states have call successors, (563) [2022-07-12 05:45:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4499 transitions. [2022-07-12 05:45:29,716 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4499 transitions. Word has length 142 [2022-07-12 05:45:29,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 4499 transitions. [2022-07-12 05:45:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 05:45:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4499 transitions. [2022-07-12 05:45:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 05:45:29,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:29,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:29,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 05:45:29,720 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:29,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1861221319, now seen corresponding path program 1 times [2022-07-12 05:45:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:29,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926779319] [2022-07-12 05:45:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:29,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:45:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:45:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:45:30,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:30,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926779319] [2022-07-12 05:45:30,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926779319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:30,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:30,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:45:30,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988906797] [2022-07-12 05:45:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:45:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:30,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:45:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:45:30,051 INFO L87 Difference]: Start difference. First operand 2780 states and 4499 transitions. Second operand has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 05:45:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:35,297 INFO L93 Difference]: Finished difference Result 6274 states and 10618 transitions. [2022-07-12 05:45:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:45:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 145 [2022-07-12 05:45:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:35,311 INFO L225 Difference]: With dead ends: 6274 [2022-07-12 05:45:35,311 INFO L226 Difference]: Without dead ends: 3596 [2022-07-12 05:45:35,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:45:35,319 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 2541 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 4642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:35,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 3590 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 05:45:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2022-07-12 05:45:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 2780. [2022-07-12 05:45:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2181 states have (on average 1.589179275561669) internal successors, (3466), 2270 states have internal predecessors, (3466), 436 states have call successors, (436), 133 states have call predecessors, (436), 162 states have return successors, (563), 436 states have call predecessors, (563), 431 states have call successors, (563) [2022-07-12 05:45:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4465 transitions. [2022-07-12 05:45:36,059 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4465 transitions. Word has length 145 [2022-07-12 05:45:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:36,060 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 4465 transitions. [2022-07-12 05:45:36,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 05:45:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4465 transitions. [2022-07-12 05:45:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 05:45:36,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:36,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:36,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 05:45:36,063 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1761678613, now seen corresponding path program 1 times [2022-07-12 05:45:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:36,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890400715] [2022-07-12 05:45:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:36,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:45:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 05:45:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:45:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:45:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:36,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890400715] [2022-07-12 05:45:36,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890400715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:36,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:36,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:45:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920713481] [2022-07-12 05:45:36,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:36,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:45:36,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:45:36,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:45:36,381 INFO L87 Difference]: Start difference. First operand 2780 states and 4465 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 05:45:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:41,431 INFO L93 Difference]: Finished difference Result 6333 states and 10692 transitions. [2022-07-12 05:45:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:45:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-07-12 05:45:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:41,445 INFO L225 Difference]: With dead ends: 6333 [2022-07-12 05:45:41,445 INFO L226 Difference]: Without dead ends: 3624 [2022-07-12 05:45:41,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:45:41,453 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1298 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:41,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2192 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 05:45:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-07-12 05:45:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2808. [2022-07-12 05:45:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2202 states have (on average 1.5817438692098094) internal successors, (3483), 2291 states have internal predecessors, (3483), 436 states have call successors, (436), 140 states have call predecessors, (436), 169 states have return successors, (561), 436 states have call predecessors, (561), 431 states have call successors, (561) [2022-07-12 05:45:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4480 transitions. [2022-07-12 05:45:42,145 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4480 transitions. Word has length 149 [2022-07-12 05:45:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:42,146 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 4480 transitions. [2022-07-12 05:45:42,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 05:45:42,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4480 transitions. [2022-07-12 05:45:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 05:45:42,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:42,149 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:42,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 05:45:42,149 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:42,149 INFO L85 PathProgramCache]: Analyzing trace with hash -783319773, now seen corresponding path program 1 times [2022-07-12 05:45:42,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:42,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85890926] [2022-07-12 05:45:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:42,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:45:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:45:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:45:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 05:45:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85890926] [2022-07-12 05:45:42,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85890926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:42,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:42,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:45:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346559403] [2022-07-12 05:45:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:42,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:45:42,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:45:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:45:42,464 INFO L87 Difference]: Start difference. First operand 2808 states and 4480 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 05:45:52,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:52,800 INFO L93 Difference]: Finished difference Result 6614 states and 10983 transitions. [2022-07-12 05:45:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 05:45:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2022-07-12 05:45:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:52,822 INFO L225 Difference]: With dead ends: 6614 [2022-07-12 05:45:52,822 INFO L226 Difference]: Without dead ends: 4196 [2022-07-12 05:45:52,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-12 05:45:52,831 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 4576 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 8104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:52,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3701 Invalid, 8104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1546 Valid, 6558 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-12 05:45:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2022-07-12 05:45:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3257. [2022-07-12 05:45:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 2566 states have (on average 1.5565081839438815) internal successors, (3994), 2661 states have internal predecessors, (3994), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-12 05:45:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 5113 transitions. [2022-07-12 05:45:53,647 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 5113 transitions. Word has length 150 [2022-07-12 05:45:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:53,647 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 5113 transitions. [2022-07-12 05:45:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 05:45:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 5113 transitions. [2022-07-12 05:45:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 05:45:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:53,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:53,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 05:45:53,650 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1466001622, now seen corresponding path program 1 times [2022-07-12 05:45:53,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:53,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136626664] [2022-07-12 05:45:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:45:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:45:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:45:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 05:45:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:54,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136626664] [2022-07-12 05:45:54,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136626664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:45:54,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070796540] [2022-07-12 05:45:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:54,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:45:54,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:45:54,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:45:54,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:45:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:54,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:45:54,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:45:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:45:54,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:45:54,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070796540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:54,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:45:54,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2022-07-12 05:45:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983775410] [2022-07-12 05:45:54,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:45:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:45:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:45:54,540 INFO L87 Difference]: Start difference. First operand 3257 states and 5113 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 05:45:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:55,644 INFO L93 Difference]: Finished difference Result 3372 states and 5308 transitions. [2022-07-12 05:45:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:45:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2022-07-12 05:45:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:55,665 INFO L225 Difference]: With dead ends: 3372 [2022-07-12 05:45:55,666 INFO L226 Difference]: Without dead ends: 3357 [2022-07-12 05:45:55,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:45:55,669 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 781 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:55,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1484 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 05:45:55,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2022-07-12 05:45:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3266. [2022-07-12 05:45:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2575 states have (on average 1.5545631067961165) internal successors, (4003), 2670 states have internal predecessors, (4003), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-12 05:45:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5122 transitions. [2022-07-12 05:45:56,547 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5122 transitions. Word has length 155 [2022-07-12 05:45:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:56,547 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5122 transitions. [2022-07-12 05:45:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 05:45:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5122 transitions. [2022-07-12 05:45:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 05:45:56,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:56,549 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:56,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 05:45:56,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:45:56,750 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2095115567, now seen corresponding path program 1 times [2022-07-12 05:45:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684055277] [2022-07-12 05:45:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:45:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:45:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:45:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:45:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:45:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:45:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:45:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:45:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:57,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684055277] [2022-07-12 05:45:57,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684055277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:57,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:57,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:45:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836827376] [2022-07-12 05:45:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:45:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:45:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:45:57,049 INFO L87 Difference]: Start difference. First operand 3266 states and 5122 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:46:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:02,433 INFO L93 Difference]: Finished difference Result 4138 states and 6867 transitions. [2022-07-12 05:46:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 05:46:02,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-07-12 05:46:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:02,451 INFO L225 Difference]: With dead ends: 4138 [2022-07-12 05:46:02,451 INFO L226 Difference]: Without dead ends: 4123 [2022-07-12 05:46:02,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:46:02,453 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1770 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 2554 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 05:46:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2022-07-12 05:46:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3266. [2022-07-12 05:46:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2575 states have (on average 1.552621359223301) internal successors, (3998), 2670 states have internal predecessors, (3998), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-12 05:46:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5117 transitions. [2022-07-12 05:46:03,239 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5117 transitions. Word has length 161 [2022-07-12 05:46:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:03,240 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5117 transitions. [2022-07-12 05:46:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:46:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5117 transitions. [2022-07-12 05:46:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 05:46:03,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:03,242 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:03,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 05:46:03,242 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 477116086, now seen corresponding path program 1 times [2022-07-12 05:46:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:03,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114113024] [2022-07-12 05:46:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:46:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:46:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:46:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:46:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:46:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:46:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:46:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 05:46:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 05:46:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:03,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114113024] [2022-07-12 05:46:03,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114113024] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:46:03,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004099997] [2022-07-12 05:46:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:03,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:46:03,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:46:03,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:46:03,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:46:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:46:03,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:46:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 05:46:03,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:46:03,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004099997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:03,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:46:03,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-07-12 05:46:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144385638] [2022-07-12 05:46:03,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:46:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:46:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:46:03,869 INFO L87 Difference]: Start difference. First operand 3266 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 05:46:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:04,795 INFO L93 Difference]: Finished difference Result 3429 states and 5376 transitions. [2022-07-12 05:46:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:46:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 172 [2022-07-12 05:46:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:04,807 INFO L225 Difference]: With dead ends: 3429 [2022-07-12 05:46:04,807 INFO L226 Difference]: Without dead ends: 3414 [2022-07-12 05:46:04,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:46:04,809 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 67 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:04,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3441 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:46:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-07-12 05:46:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3281. [2022-07-12 05:46:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 2590 states have (on average 1.5494208494208495) internal successors, (4013), 2685 states have internal predecessors, (4013), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-12 05:46:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 5132 transitions. [2022-07-12 05:46:05,542 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 5132 transitions. Word has length 172 [2022-07-12 05:46:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:05,542 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 5132 transitions. [2022-07-12 05:46:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 05:46:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 5132 transitions. [2022-07-12 05:46:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 05:46:05,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:05,546 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:05,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 05:46:05,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:46:05,747 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash -263542900, now seen corresponding path program 1 times [2022-07-12 05:46:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:05,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876993925] [2022-07-12 05:46:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:05,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:46:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:46:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:46:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:46:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:46:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:46:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 05:46:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 05:46:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 05:46:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 05:46:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 05:46:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 05:46:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-12 05:46:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876993925] [2022-07-12 05:46:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876993925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:46:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551898787] [2022-07-12 05:46:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:06,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:46:06,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:46:06,176 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:46:06,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:46:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:06,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:46:06,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:46:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-12 05:46:06,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:46:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-12 05:46:07,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551898787] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:46:07,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 05:46:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2022-07-12 05:46:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494999987] [2022-07-12 05:46:07,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 05:46:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 05:46:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 05:46:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:46:07,095 INFO L87 Difference]: Start difference. First operand 3281 states and 5132 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-07-12 05:46:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:40,726 INFO L93 Difference]: Finished difference Result 17578 states and 29358 transitions. [2022-07-12 05:46:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-12 05:46:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) Word has length 215 [2022-07-12 05:46:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:40,801 INFO L225 Difference]: With dead ends: 17578 [2022-07-12 05:46:40,801 INFO L226 Difference]: Without dead ends: 14379 [2022-07-12 05:46:40,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1252, Invalid=8060, Unknown=0, NotChecked=0, Total=9312 [2022-07-12 05:46:40,821 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 11420 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 29034 mSolverCounterSat, 5671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11431 SdHoareTripleChecker+Valid, 14829 SdHoareTripleChecker+Invalid, 34705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5671 IncrementalHoareTripleChecker+Valid, 29034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:40,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11431 Valid, 14829 Invalid, 34705 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5671 Valid, 29034 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2022-07-12 05:46:40,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14379 states. [2022-07-12 05:46:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14379 to 10744. [2022-07-12 05:46:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 8318 states have (on average 1.5407549891800913) internal successors, (12816), 8640 states have internal predecessors, (12816), 1766 states have call successors, (1766), 508 states have call predecessors, (1766), 659 states have return successors, (2591), 1808 states have call predecessors, (2591), 1761 states have call successors, (2591) [2022-07-12 05:46:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 17173 transitions. [2022-07-12 05:46:43,980 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 17173 transitions. Word has length 215 [2022-07-12 05:46:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:43,981 INFO L495 AbstractCegarLoop]: Abstraction has 10744 states and 17173 transitions. [2022-07-12 05:46:43,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-07-12 05:46:43,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 17173 transitions. [2022-07-12 05:46:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-12 05:46:43,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:43,992 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:44,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:46:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:46:44,194 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1280539560, now seen corresponding path program 1 times [2022-07-12 05:46:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:44,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648393771] [2022-07-12 05:46:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:46:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:46:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:46:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:46:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:46:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:46:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 05:46:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 05:46:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 05:46:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 05:46:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 05:46:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 05:46:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:46:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:46:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 05:46:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:46:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:46:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:46:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 05:46:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-12 05:46:44,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:44,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648393771] [2022-07-12 05:46:44,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648393771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:46:44,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338158023] [2022-07-12 05:46:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:44,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:46:44,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:46:44,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:46:44,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 05:46:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:44,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:46:44,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:46:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-12 05:46:44,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:46:44,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338158023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:44,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:46:44,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-07-12 05:46:44,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941084875] [2022-07-12 05:46:44,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:44,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:46:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:46:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:46:44,874 INFO L87 Difference]: Start difference. First operand 10744 states and 17173 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27)