./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:18:51,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:18:51,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:18:51,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:18:51,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:18:51,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:18:51,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:18:51,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:18:51,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:18:51,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:18:51,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:18:51,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:18:51,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:18:51,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:18:51,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:18:51,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:18:51,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:18:51,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:18:51,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:18:51,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:18:51,614 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:18:51,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:18:51,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:18:51,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:18:51,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:18:51,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:18:51,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:18:51,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:18:51,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:18:51,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:18:51,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:18:51,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:18:51,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:18:51,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:18:51,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:18:51,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:18:51,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:18:51,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:18:51,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:18:51,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:18:51,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:18:51,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:18:51,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:18:51,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:18:51,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:18:51,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:18:51,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:18:51,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:18:51,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:18:51,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:18:51,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:18:51,662 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:18:51,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:18:51,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:18:51,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:18:51,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:18:51,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:18:51,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:18:51,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:18:51,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:18:51,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:18:51,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:18:51,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:18:51,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:18:51,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:18:51,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:18:51,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:18:51,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:18:51,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:18:51,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:18:51,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:18:51,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2022-07-21 05:18:51,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:18:51,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:18:51,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:18:51,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:18:51,948 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:18:51,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-21 05:18:52,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a595aec1/60f1c9ce68bc46778320ced6bc7d9bd7/FLAGf8bafa546 [2022-07-21 05:18:52,410 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:18:52,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-21 05:18:52,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a595aec1/60f1c9ce68bc46778320ced6bc7d9bd7/FLAGf8bafa546 [2022-07-21 05:18:52,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a595aec1/60f1c9ce68bc46778320ced6bc7d9bd7 [2022-07-21 05:18:52,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:18:52,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:18:52,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:18:52,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:18:52,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:18:52,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4bfd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52, skipping insertion in model container [2022-07-21 05:18:52,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:18:52,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:18:52,703 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-07-21 05:18:52,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:18:52,742 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:18:52,814 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-07-21 05:18:52,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:18:52,825 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:18:52,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52 WrapperNode [2022-07-21 05:18:52,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:18:52,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:18:52,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:18:52,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:18:52,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,882 INFO L137 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 536 [2022-07-21 05:18:52,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:18:52,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:18:52,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:18:52,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:18:52,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:18:52,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:18:52,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:18:52,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:18:52,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (1/1) ... [2022-07-21 05:18:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:18:52,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:18:52,964 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) [2022-07-21 05:18:52,969 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 [2022-07-21 05:18:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-21 05:18:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-21 05:18:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:18:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-21 05:18:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-21 05:18:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:18:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:18:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:18:52,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:18:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:18:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-21 05:18:52,992 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-21 05:18:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:18:52,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:18:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-21 05:18:52,993 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-21 05:18:53,080 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:18:53,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:18:53,570 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:18:53,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:18:53,580 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:18:53,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:18:53 BoogieIcfgContainer [2022-07-21 05:18:53,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:18:53,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:18:53,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:18:53,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:18:53,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:18:52" (1/3) ... [2022-07-21 05:18:53,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c793c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:18:53, skipping insertion in model container [2022-07-21 05:18:53,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:52" (2/3) ... [2022-07-21 05:18:53,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c793c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:18:53, skipping insertion in model container [2022-07-21 05:18:53,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:18:53" (3/3) ... [2022-07-21 05:18:53,586 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-07-21 05:18:53,595 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:18:53,595 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:18:53,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:18:53,630 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@196c5338, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47dcde7a [2022-07-21 05:18:53,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:18:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 05:18:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:18:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:53,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:53,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 11515241, now seen corresponding path program 1 times [2022-07-21 05:18:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:53,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210016335] [2022-07-21 05:18:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:53,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:18:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:53,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:53,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210016335] [2022-07-21 05:18:53,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210016335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:53,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:53,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:18:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709061255] [2022-07-21 05:18:53,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:53,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:18:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:18:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:18:53,856 INFO L87 Difference]: Start difference. First operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:53,910 INFO L93 Difference]: Finished difference Result 378 states and 619 transitions. [2022-07-21 05:18:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:18:53,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:18:53,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:53,922 INFO L225 Difference]: With dead ends: 378 [2022-07-21 05:18:53,922 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 05:18:53,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:18:53,930 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:53,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 05:18:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-21 05:18:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.509433962264151) internal successors, (240), 160 states have internal predecessors, (240), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 05:18:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 298 transitions. [2022-07-21 05:18:53,981 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 298 transitions. Word has length 44 [2022-07-21 05:18:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:53,982 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 298 transitions. [2022-07-21 05:18:53,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 298 transitions. [2022-07-21 05:18:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:18:53,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:53,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:18:53,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:53,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:53,987 INFO L85 PathProgramCache]: Analyzing trace with hash -419952089, now seen corresponding path program 1 times [2022-07-21 05:18:53,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:53,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380693904] [2022-07-21 05:18:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:18:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380693904] [2022-07-21 05:18:54,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380693904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:54,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:54,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:18:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977181732] [2022-07-21 05:18:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:18:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:18:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:18:54,125 INFO L87 Difference]: Start difference. First operand 195 states and 298 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:54,203 INFO L93 Difference]: Finished difference Result 376 states and 570 transitions. [2022-07-21 05:18:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:54,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:18:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:54,206 INFO L225 Difference]: With dead ends: 376 [2022-07-21 05:18:54,207 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 05:18:54,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:18:54,211 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 171 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1253 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 05:18:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-07-21 05:18:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.4339622641509433) internal successors, (228), 160 states have internal predecessors, (228), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 05:18:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 286 transitions. [2022-07-21 05:18:54,231 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 286 transitions. Word has length 44 [2022-07-21 05:18:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:54,236 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 286 transitions. [2022-07-21 05:18:54,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 286 transitions. [2022-07-21 05:18:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 05:18:54,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:54,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:18:54,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -752782365, now seen corresponding path program 1 times [2022-07-21 05:18:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:54,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605187918] [2022-07-21 05:18:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:54,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:54,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605187918] [2022-07-21 05:18:54,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605187918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:54,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:54,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566452316] [2022-07-21 05:18:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:54,379 INFO L87 Difference]: Start difference. First operand 195 states and 286 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:54,412 INFO L93 Difference]: Finished difference Result 377 states and 562 transitions. [2022-07-21 05:18:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:54,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-21 05:18:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:54,415 INFO L225 Difference]: With dead ends: 377 [2022-07-21 05:18:54,415 INFO L226 Difference]: Without dead ends: 199 [2022-07-21 05:18:54,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:54,421 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 5 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:54,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 830 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-21 05:18:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-07-21 05:18:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 163 states have internal predecessors, (231), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 05:18:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 289 transitions. [2022-07-21 05:18:54,438 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 289 transitions. Word has length 55 [2022-07-21 05:18:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:54,438 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 289 transitions. [2022-07-21 05:18:54,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:18:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 289 transitions. [2022-07-21 05:18:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 05:18:54,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:54,443 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:18:54,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1335268689, now seen corresponding path program 1 times [2022-07-21 05:18:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155739486] [2022-07-21 05:18:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:18:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 05:18:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:54,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155739486] [2022-07-21 05:18:54,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155739486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:54,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:54,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:18:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934007890] [2022-07-21 05:18:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:18:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:18:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:18:54,539 INFO L87 Difference]: Start difference. First operand 199 states and 289 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:54,571 INFO L93 Difference]: Finished difference Result 543 states and 801 transitions. [2022-07-21 05:18:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:18:54,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-07-21 05:18:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:54,574 INFO L225 Difference]: With dead ends: 543 [2022-07-21 05:18:54,574 INFO L226 Difference]: Without dead ends: 361 [2022-07-21 05:18:54,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:18:54,576 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 222 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:54,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 597 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:54,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-07-21 05:18:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 352. [2022-07-21 05:18:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 280 states have (on average 1.4464285714285714) internal successors, (405), 282 states have internal predecessors, (405), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-21 05:18:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 519 transitions. [2022-07-21 05:18:54,600 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 519 transitions. Word has length 71 [2022-07-21 05:18:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:54,600 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 519 transitions. [2022-07-21 05:18:54,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 519 transitions. [2022-07-21 05:18:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:18:54,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:54,602 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:18:54,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash -900788511, now seen corresponding path program 1 times [2022-07-21 05:18:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:54,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979649586] [2022-07-21 05:18:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:54,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 05:18:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:54,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:54,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979649586] [2022-07-21 05:18:54,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979649586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:54,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:54,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:18:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107127277] [2022-07-21 05:18:54,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:54,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:18:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:18:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:54,697 INFO L87 Difference]: Start difference. First operand 352 states and 519 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:54,938 INFO L93 Difference]: Finished difference Result 1012 states and 1519 transitions. [2022-07-21 05:18:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:18:54,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-21 05:18:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:54,943 INFO L225 Difference]: With dead ends: 1012 [2022-07-21 05:18:54,943 INFO L226 Difference]: Without dead ends: 677 [2022-07-21 05:18:54,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:18:54,944 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 761 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:54,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 740 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:18:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-07-21 05:18:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 446. [2022-07-21 05:18:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 370 states have (on average 1.4324324324324325) internal successors, (530), 371 states have internal predecessors, (530), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 648 transitions. [2022-07-21 05:18:54,983 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 648 transitions. Word has length 72 [2022-07-21 05:18:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:54,983 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 648 transitions. [2022-07-21 05:18:54,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 648 transitions. [2022-07-21 05:18:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 05:18:54,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:54,984 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:54,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:18:54,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 763300850, now seen corresponding path program 1 times [2022-07-21 05:18:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:54,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319783079] [2022-07-21 05:18:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:54,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 05:18:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319783079] [2022-07-21 05:18:55,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319783079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:18:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510747387] [2022-07-21 05:18:55,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:18:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:18:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:55,067 INFO L87 Difference]: Start difference. First operand 446 states and 648 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:55,280 INFO L93 Difference]: Finished difference Result 1014 states and 1519 transitions. [2022-07-21 05:18:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:18:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-07-21 05:18:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:55,284 INFO L225 Difference]: With dead ends: 1014 [2022-07-21 05:18:55,284 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 05:18:55,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:18:55,285 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 758 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 742 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:18:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 05:18:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 450. [2022-07-21 05:18:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 374 states have (on average 1.427807486631016) internal successors, (534), 375 states have internal predecessors, (534), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 652 transitions. [2022-07-21 05:18:55,324 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 652 transitions. Word has length 73 [2022-07-21 05:18:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,324 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 652 transitions. [2022-07-21 05:18:55,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 652 transitions. [2022-07-21 05:18:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 05:18:55,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,326 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:55,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:18:55,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1861521472, now seen corresponding path program 1 times [2022-07-21 05:18:55,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806215388] [2022-07-21 05:18:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 05:18:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806215388] [2022-07-21 05:18:55,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806215388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844882706] [2022-07-21 05:18:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:55,382 INFO L87 Difference]: Start difference. First operand 450 states and 652 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:55,581 INFO L93 Difference]: Finished difference Result 1014 states and 1515 transitions. [2022-07-21 05:18:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:18:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-07-21 05:18:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:55,584 INFO L225 Difference]: With dead ends: 1014 [2022-07-21 05:18:55,584 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 05:18:55,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:55,586 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 227 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:55,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 715 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:18:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 05:18:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 450. [2022-07-21 05:18:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 374 states have (on average 1.4224598930481283) internal successors, (532), 375 states have internal predecessors, (532), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 650 transitions. [2022-07-21 05:18:55,625 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 650 transitions. Word has length 75 [2022-07-21 05:18:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,626 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 650 transitions. [2022-07-21 05:18:55,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:18:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 650 transitions. [2022-07-21 05:18:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 05:18:55,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:18:55,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -559886893, now seen corresponding path program 1 times [2022-07-21 05:18:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092594436] [2022-07-21 05:18:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092594436] [2022-07-21 05:18:55,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092594436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225090971] [2022-07-21 05:18:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:55,678 INFO L87 Difference]: Start difference. First operand 450 states and 650 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:18:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:55,712 INFO L93 Difference]: Finished difference Result 795 states and 1165 transitions. [2022-07-21 05:18:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-07-21 05:18:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:55,715 INFO L225 Difference]: With dead ends: 795 [2022-07-21 05:18:55,715 INFO L226 Difference]: Without dead ends: 460 [2022-07-21 05:18:55,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:55,716 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 6 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:55,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 842 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-21 05:18:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-07-21 05:18:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 382 states have (on average 1.4136125654450262) internal successors, (540), 383 states have internal predecessors, (540), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 658 transitions. [2022-07-21 05:18:55,747 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 658 transitions. Word has length 76 [2022-07-21 05:18:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,748 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 658 transitions. [2022-07-21 05:18:55,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:18:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 658 transitions. [2022-07-21 05:18:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:18:55,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:18:55,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1187329977, now seen corresponding path program 1 times [2022-07-21 05:18:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893902405] [2022-07-21 05:18:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:55,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893902405] [2022-07-21 05:18:55,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893902405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465697487] [2022-07-21 05:18:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:55,799 INFO L87 Difference]: Start difference. First operand 460 states and 658 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:18:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:55,840 INFO L93 Difference]: Finished difference Result 815 states and 1187 transitions. [2022-07-21 05:18:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-07-21 05:18:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:55,842 INFO L225 Difference]: With dead ends: 815 [2022-07-21 05:18:55,842 INFO L226 Difference]: Without dead ends: 470 [2022-07-21 05:18:55,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:55,844 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:55,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 828 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-21 05:18:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2022-07-21 05:18:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 390 states have (on average 1.405128205128205) internal successors, (548), 391 states have internal predecessors, (548), 59 states have call successors, (59), 20 states have call predecessors, (59), 20 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 666 transitions. [2022-07-21 05:18:55,864 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 666 transitions. Word has length 84 [2022-07-21 05:18:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,864 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 666 transitions. [2022-07-21 05:18:55,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:18:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 666 transitions. [2022-07-21 05:18:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:18:55,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:55,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:18:55,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1492689475, now seen corresponding path program 1 times [2022-07-21 05:18:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459818120] [2022-07-21 05:18:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:55,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459818120] [2022-07-21 05:18:55,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459818120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357975994] [2022-07-21 05:18:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:55,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:55,926 INFO L87 Difference]: Start difference. First operand 470 states and 666 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:18:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:55,963 INFO L93 Difference]: Finished difference Result 833 states and 1195 transitions. [2022-07-21 05:18:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:18:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:55,965 INFO L225 Difference]: With dead ends: 833 [2022-07-21 05:18:55,965 INFO L226 Difference]: Without dead ends: 478 [2022-07-21 05:18:55,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:55,967 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-07-21 05:18:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-07-21 05:18:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 396 states have (on average 1.398989898989899) internal successors, (554), 397 states have internal predecessors, (554), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 672 transitions. [2022-07-21 05:18:55,988 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 672 transitions. Word has length 92 [2022-07-21 05:18:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,988 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 672 transitions. [2022-07-21 05:18:55,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:18:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 672 transitions. [2022-07-21 05:18:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:18:55,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:18:55,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -405818518, now seen corresponding path program 1 times [2022-07-21 05:18:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017300297] [2022-07-21 05:18:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:18:56,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:56,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017300297] [2022-07-21 05:18:56,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017300297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:56,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:56,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:56,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141501084] [2022-07-21 05:18:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:56,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:56,046 INFO L87 Difference]: Start difference. First operand 478 states and 672 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:18:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:56,104 INFO L93 Difference]: Finished difference Result 851 states and 1215 transitions. [2022-07-21 05:18:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:56,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:18:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:56,107 INFO L225 Difference]: With dead ends: 851 [2022-07-21 05:18:56,107 INFO L226 Difference]: Without dead ends: 488 [2022-07-21 05:18:56,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:56,109 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 6 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:56,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 828 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-07-21 05:18:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-07-21 05:18:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 404 states have (on average 1.391089108910891) internal successors, (562), 405 states have internal predecessors, (562), 59 states have call successors, (59), 24 states have call predecessors, (59), 24 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 680 transitions. [2022-07-21 05:18:56,135 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 680 transitions. Word has length 92 [2022-07-21 05:18:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:56,135 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 680 transitions. [2022-07-21 05:18:56,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:18:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 680 transitions. [2022-07-21 05:18:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 05:18:56,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:56,137 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:56,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:18:56,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1172591310, now seen corresponding path program 1 times [2022-07-21 05:18:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:56,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071302349] [2022-07-21 05:18:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:18:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071302349] [2022-07-21 05:18:56,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071302349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:56,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:56,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487442528] [2022-07-21 05:18:56,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:56,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:56,207 INFO L87 Difference]: Start difference. First operand 488 states and 680 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:18:56,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:56,255 INFO L93 Difference]: Finished difference Result 873 states and 1229 transitions. [2022-07-21 05:18:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:56,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-07-21 05:18:56,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:56,259 INFO L225 Difference]: With dead ends: 873 [2022-07-21 05:18:56,259 INFO L226 Difference]: Without dead ends: 500 [2022-07-21 05:18:56,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:56,260 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 7 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:56,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 839 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-21 05:18:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-07-21 05:18:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 414 states have (on average 1.3816425120772946) internal successors, (572), 415 states have internal predecessors, (572), 59 states have call successors, (59), 26 states have call predecessors, (59), 26 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-21 05:18:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 690 transitions. [2022-07-21 05:18:56,290 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 690 transitions. Word has length 100 [2022-07-21 05:18:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:56,290 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 690 transitions. [2022-07-21 05:18:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:18:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 690 transitions. [2022-07-21 05:18:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 05:18:56,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:56,292 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:18:56,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 498895455, now seen corresponding path program 1 times [2022-07-21 05:18:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47343361] [2022-07-21 05:18:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:18:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:18:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47343361] [2022-07-21 05:18:56,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47343361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:56,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:56,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:56,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130737525] [2022-07-21 05:18:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:56,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:56,428 INFO L87 Difference]: Start difference. First operand 500 states and 690 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:18:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:56,658 INFO L93 Difference]: Finished difference Result 1360 states and 1901 transitions. [2022-07-21 05:18:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:18:56,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-07-21 05:18:56,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:56,664 INFO L225 Difference]: With dead ends: 1360 [2022-07-21 05:18:56,664 INFO L226 Difference]: Without dead ends: 975 [2022-07-21 05:18:56,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:56,666 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 383 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:56,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2221 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:18:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-21 05:18:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 644. [2022-07-21 05:18:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 521 states have (on average 1.3723608445297504) internal successors, (715), 523 states have internal predecessors, (715), 83 states have call successors, (83), 39 states have call predecessors, (83), 39 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-21 05:18:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 881 transitions. [2022-07-21 05:18:56,717 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 881 transitions. Word has length 103 [2022-07-21 05:18:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:56,717 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 881 transitions. [2022-07-21 05:18:56,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:18:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 881 transitions. [2022-07-21 05:18:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 05:18:56,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:56,719 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:18:56,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1291996142, now seen corresponding path program 1 times [2022-07-21 05:18:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:56,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879537403] [2022-07-21 05:18:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:18:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:18:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879537403] [2022-07-21 05:18:56,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879537403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:56,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:56,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48015995] [2022-07-21 05:18:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:56,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:56,796 INFO L87 Difference]: Start difference. First operand 644 states and 881 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:18:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:56,859 INFO L93 Difference]: Finished difference Result 1149 states and 1585 transitions. [2022-07-21 05:18:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:18:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-07-21 05:18:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:56,862 INFO L225 Difference]: With dead ends: 1149 [2022-07-21 05:18:56,862 INFO L226 Difference]: Without dead ends: 656 [2022-07-21 05:18:56,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:56,864 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:56,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-21 05:18:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2022-07-21 05:18:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 530 states have (on average 1.3660377358490565) internal successors, (724), 532 states have internal predecessors, (724), 83 states have call successors, (83), 42 states have call predecessors, (83), 42 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-07-21 05:18:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 890 transitions. [2022-07-21 05:18:56,913 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 890 transitions. Word has length 107 [2022-07-21 05:18:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:56,914 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 890 transitions. [2022-07-21 05:18:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:18:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 890 transitions. [2022-07-21 05:18:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 05:18:56,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:56,915 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] [2022-07-21 05:18:56,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:18:56,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 739054211, now seen corresponding path program 1 times [2022-07-21 05:18:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:56,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917725160] [2022-07-21 05:18:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:18:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:18:56,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917725160] [2022-07-21 05:18:56,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917725160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:56,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:56,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:18:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002185220] [2022-07-21 05:18:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:18:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:18:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:18:56,999 INFO L87 Difference]: Start difference. First operand 656 states and 890 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:18:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:57,100 INFO L93 Difference]: Finished difference Result 921 states and 1302 transitions. [2022-07-21 05:18:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:57,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-21 05:18:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:57,104 INFO L225 Difference]: With dead ends: 921 [2022-07-21 05:18:57,104 INFO L226 Difference]: Without dead ends: 919 [2022-07-21 05:18:57,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:18:57,105 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 261 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:57,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2190 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-07-21 05:18:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 660. [2022-07-21 05:18:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 532 states have (on average 1.3646616541353382) internal successors, (726), 535 states have internal predecessors, (726), 84 states have call successors, (84), 43 states have call predecessors, (84), 43 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-21 05:18:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 894 transitions. [2022-07-21 05:18:57,143 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 894 transitions. Word has length 106 [2022-07-21 05:18:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:57,144 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 894 transitions. [2022-07-21 05:18:57,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:18:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 894 transitions. [2022-07-21 05:18:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 05:18:57,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:57,145 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] [2022-07-21 05:18:57,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:18:57,145 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1139472038, now seen corresponding path program 1 times [2022-07-21 05:18:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:57,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647313338] [2022-07-21 05:18:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:57,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:18:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 05:18:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:57,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647313338] [2022-07-21 05:18:57,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647313338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:57,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:57,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:57,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281424712] [2022-07-21 05:18:57,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:57,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:57,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:57,203 INFO L87 Difference]: Start difference. First operand 660 states and 894 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:18:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:57,374 INFO L93 Difference]: Finished difference Result 1388 states and 1913 transitions. [2022-07-21 05:18:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:18:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-21 05:18:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:57,379 INFO L225 Difference]: With dead ends: 1388 [2022-07-21 05:18:57,379 INFO L226 Difference]: Without dead ends: 920 [2022-07-21 05:18:57,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:57,381 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 503 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:57,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2178 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:18:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-07-21 05:18:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 703. [2022-07-21 05:18:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 584 states have (on average 1.3595890410958904) internal successors, (794), 589 states have internal predecessors, (794), 76 states have call successors, (76), 42 states have call predecessors, (76), 42 states have return successors, (76), 71 states have call predecessors, (76), 76 states have call successors, (76) [2022-07-21 05:18:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 946 transitions. [2022-07-21 05:18:57,445 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 946 transitions. Word has length 109 [2022-07-21 05:18:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:57,446 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 946 transitions. [2022-07-21 05:18:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:18:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 946 transitions. [2022-07-21 05:18:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 05:18:57,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:57,448 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] [2022-07-21 05:18:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:18:57,448 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash 672232165, now seen corresponding path program 1 times [2022-07-21 05:18:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:57,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729249719] [2022-07-21 05:18:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:18:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:18:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:18:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:57,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729249719] [2022-07-21 05:18:57,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729249719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:57,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:57,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032666109] [2022-07-21 05:18:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:57,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:57,556 INFO L87 Difference]: Start difference. First operand 703 states and 946 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:18:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:57,720 INFO L93 Difference]: Finished difference Result 1450 states and 1994 transitions. [2022-07-21 05:18:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:18:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-07-21 05:18:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:57,724 INFO L225 Difference]: With dead ends: 1450 [2022-07-21 05:18:57,724 INFO L226 Difference]: Without dead ends: 929 [2022-07-21 05:18:57,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:57,726 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 367 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:57,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 2330 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:18:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-21 05:18:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 692. [2022-07-21 05:18:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 576 states have (on average 1.3576388888888888) internal successors, (782), 581 states have internal predecessors, (782), 74 states have call successors, (74), 41 states have call predecessors, (74), 41 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2022-07-21 05:18:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 930 transitions. [2022-07-21 05:18:57,777 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 930 transitions. Word has length 111 [2022-07-21 05:18:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:57,777 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 930 transitions. [2022-07-21 05:18:57,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:18:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 930 transitions. [2022-07-21 05:18:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:18:57,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:57,779 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:18:57,779 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1990320010, now seen corresponding path program 1 times [2022-07-21 05:18:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:57,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700648360] [2022-07-21 05:18:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:18:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:18:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:18:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700648360] [2022-07-21 05:18:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700648360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:57,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:57,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:18:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941693614] [2022-07-21 05:18:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:18:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:18:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:18:57,836 INFO L87 Difference]: Start difference. First operand 692 states and 930 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:18:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:58,009 INFO L93 Difference]: Finished difference Result 1922 states and 2633 transitions. [2022-07-21 05:18:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:18:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-07-21 05:18:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:58,022 INFO L225 Difference]: With dead ends: 1922 [2022-07-21 05:18:58,022 INFO L226 Difference]: Without dead ends: 1392 [2022-07-21 05:18:58,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:18:58,024 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 424 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:58,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1043 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:18:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-07-21 05:18:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1154. [2022-07-21 05:18:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 938 states have (on average 1.349680170575693) internal successors, (1266), 947 states have internal predecessors, (1266), 140 states have call successors, (140), 75 states have call predecessors, (140), 75 states have return successors, (140), 131 states have call predecessors, (140), 140 states have call successors, (140) [2022-07-21 05:18:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1546 transitions. [2022-07-21 05:18:58,089 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1546 transitions. Word has length 112 [2022-07-21 05:18:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:58,089 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1546 transitions. [2022-07-21 05:18:58,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:18:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1546 transitions. [2022-07-21 05:18:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:18:58,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:58,090 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:58,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:18:58,091 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:58,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1802932996, now seen corresponding path program 1 times [2022-07-21 05:18:58,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:58,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720059174] [2022-07-21 05:18:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:18:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:18:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:18:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:18:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720059174] [2022-07-21 05:18:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720059174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:58,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:58,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:18:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982434248] [2022-07-21 05:18:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:18:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:18:58,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:18:58,130 INFO L87 Difference]: Start difference. First operand 1154 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:18:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:58,254 INFO L93 Difference]: Finished difference Result 3024 states and 4036 transitions. [2022-07-21 05:18:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:18:58,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2022-07-21 05:18:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:58,260 INFO L225 Difference]: With dead ends: 3024 [2022-07-21 05:18:58,260 INFO L226 Difference]: Without dead ends: 2045 [2022-07-21 05:18:58,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:18:58,262 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 220 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:58,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:18:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-07-21 05:18:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2022-07-21 05:18:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1340 states have (on average 1.3425373134328358) internal successors, (1799), 1355 states have internal predecessors, (1799), 230 states have call successors, (230), 120 states have call predecessors, (230), 120 states have return successors, (230), 215 states have call predecessors, (230), 230 states have call successors, (230) [2022-07-21 05:18:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2259 transitions. [2022-07-21 05:18:58,366 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2259 transitions. Word has length 112 [2022-07-21 05:18:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2259 transitions. [2022-07-21 05:18:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:18:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2259 transitions. [2022-07-21 05:18:58,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:18:58,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:58,368 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:58,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 05:18:58,368 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -225653114, now seen corresponding path program 1 times [2022-07-21 05:18:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683156364] [2022-07-21 05:18:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:18:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:18:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:18:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:18:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683156364] [2022-07-21 05:18:58,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683156364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:58,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:58,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 05:18:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095610927] [2022-07-21 05:18:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:58,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 05:18:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 05:18:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:18:58,498 INFO L87 Difference]: Start difference. First operand 1691 states and 2259 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:18:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:59,026 INFO L93 Difference]: Finished difference Result 3913 states and 5376 transitions. [2022-07-21 05:18:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:18:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-07-21 05:18:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:59,037 INFO L225 Difference]: With dead ends: 3913 [2022-07-21 05:18:59,037 INFO L226 Difference]: Without dead ends: 2493 [2022-07-21 05:18:59,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:18:59,041 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 717 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:59,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 3052 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:18:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2022-07-21 05:18:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1697. [2022-07-21 05:18:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1340 states have (on average 1.3291044776119403) internal successors, (1781), 1356 states have internal predecessors, (1781), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-21 05:18:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2243 transitions. [2022-07-21 05:18:59,181 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2243 transitions. Word has length 112 [2022-07-21 05:18:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:59,181 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 2243 transitions. [2022-07-21 05:18:59,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:18:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2243 transitions. [2022-07-21 05:18:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 05:18:59,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:59,183 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:59,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 05:18:59,183 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:59,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2002429441, now seen corresponding path program 1 times [2022-07-21 05:18:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:59,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528283720] [2022-07-21 05:18:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:18:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:18:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:18:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:18:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:18:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:18:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:18:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:18:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:59,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528283720] [2022-07-21 05:18:59,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528283720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:59,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:59,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:59,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320211855] [2022-07-21 05:18:59,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:59,260 INFO L87 Difference]: Start difference. First operand 1697 states and 2243 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:18:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:59,795 INFO L93 Difference]: Finished difference Result 4049 states and 5477 transitions. [2022-07-21 05:18:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:18:59,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-07-21 05:18:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:59,804 INFO L225 Difference]: With dead ends: 4049 [2022-07-21 05:18:59,804 INFO L226 Difference]: Without dead ends: 2681 [2022-07-21 05:18:59,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:18:59,808 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 780 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:59,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 2364 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:18:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-07-21 05:18:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1716. [2022-07-21 05:18:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1346 states have (on average 1.324665676077266) internal successors, (1783), 1363 states have internal predecessors, (1783), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-07-21 05:18:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2261 transitions. [2022-07-21 05:18:59,957 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2261 transitions. Word has length 114 [2022-07-21 05:18:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:59,957 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2261 transitions. [2022-07-21 05:18:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:18:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2261 transitions. [2022-07-21 05:18:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:18:59,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:59,958 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:18:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 05:18:59,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:59,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1926273345, now seen corresponding path program 1 times [2022-07-21 05:18:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355807339] [2022-07-21 05:18:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 05:18:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:18:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:18:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:18:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:18:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:18:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:59,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:18:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:00,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355807339] [2022-07-21 05:19:00,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355807339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466551757] [2022-07-21 05:19:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:00,001 INFO L87 Difference]: Start difference. First operand 1716 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:00,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,317 INFO L93 Difference]: Finished difference Result 4474 states and 5968 transitions. [2022-07-21 05:19:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,329 INFO L225 Difference]: With dead ends: 4474 [2022-07-21 05:19:00,330 INFO L226 Difference]: Without dead ends: 3122 [2022-07-21 05:19:00,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:00,334 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 468 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:00,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1242 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-07-21 05:19:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2645. [2022-07-21 05:19:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2038 states have (on average 1.3209028459273797) internal successors, (2692), 2065 states have internal predecessors, (2692), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-21 05:19:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3480 transitions. [2022-07-21 05:19:00,534 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3480 transitions. Word has length 115 [2022-07-21 05:19:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:00,534 INFO L495 AbstractCegarLoop]: Abstraction has 2645 states and 3480 transitions. [2022-07-21 05:19:00,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3480 transitions. [2022-07-21 05:19:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:00,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:00,536 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 05:19:00,536 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash -359185766, now seen corresponding path program 1 times [2022-07-21 05:19:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:00,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509879152] [2022-07-21 05:19:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509879152] [2022-07-21 05:19:00,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509879152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725245511] [2022-07-21 05:19:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:00,581 INFO L87 Difference]: Start difference. First operand 2645 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,924 INFO L93 Difference]: Finished difference Result 6356 states and 8732 transitions. [2022-07-21 05:19:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,939 INFO L225 Difference]: With dead ends: 6356 [2022-07-21 05:19:00,939 INFO L226 Difference]: Without dead ends: 3955 [2022-07-21 05:19:00,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:00,945 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 151 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:00,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 683 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-21 05:19:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2648. [2022-07-21 05:19:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2041 states have (on average 1.3204311611954924) internal successors, (2695), 2068 states have internal predecessors, (2695), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-07-21 05:19:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3483 transitions. [2022-07-21 05:19:01,161 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3483 transitions. Word has length 115 [2022-07-21 05:19:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:01,162 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 3483 transitions. [2022-07-21 05:19:01,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3483 transitions. [2022-07-21 05:19:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:01,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:01,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:01,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 05:19:01,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1956455983, now seen corresponding path program 1 times [2022-07-21 05:19:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:01,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763348630] [2022-07-21 05:19:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:01,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:01,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763348630] [2022-07-21 05:19:01,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763348630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:01,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697802620] [2022-07-21 05:19:01,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:01,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:01,208 INFO L87 Difference]: Start difference. First operand 2648 states and 3483 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:01,568 INFO L93 Difference]: Finished difference Result 6363 states and 8434 transitions. [2022-07-21 05:19:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:01,580 INFO L225 Difference]: With dead ends: 6363 [2022-07-21 05:19:01,580 INFO L226 Difference]: Without dead ends: 4210 [2022-07-21 05:19:01,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:01,586 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 417 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:01,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1246 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-07-21 05:19:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3626. [2022-07-21 05:19:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2780 states have (on average 1.3183453237410072) internal successors, (3665), 2817 states have internal predecessors, (3665), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-07-21 05:19:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4767 transitions. [2022-07-21 05:19:01,923 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4767 transitions. Word has length 115 [2022-07-21 05:19:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:01,923 INFO L495 AbstractCegarLoop]: Abstraction has 3626 states and 4767 transitions. [2022-07-21 05:19:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4767 transitions. [2022-07-21 05:19:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 05:19:01,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:01,926 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:01,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 05:19:01,927 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash -692474903, now seen corresponding path program 1 times [2022-07-21 05:19:01,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:01,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115210432] [2022-07-21 05:19:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:01,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115210432] [2022-07-21 05:19:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115210432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480119265] [2022-07-21 05:19:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:01,996 INFO L87 Difference]: Start difference. First operand 3626 states and 4767 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,388 INFO L93 Difference]: Finished difference Result 7543 states and 10134 transitions. [2022-07-21 05:19:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:02,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-07-21 05:19:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,412 INFO L225 Difference]: With dead ends: 7543 [2022-07-21 05:19:02,412 INFO L226 Difference]: Without dead ends: 4010 [2022-07-21 05:19:02,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,418 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 368 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 860 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2022-07-21 05:19:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3152. [2022-07-21 05:19:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 2383 states have (on average 1.3176668065463701) internal successors, (3140), 2407 states have internal predecessors, (3140), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-21 05:19:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4144 transitions. [2022-07-21 05:19:02,664 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4144 transitions. Word has length 116 [2022-07-21 05:19:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,664 INFO L495 AbstractCegarLoop]: Abstraction has 3152 states and 4144 transitions. [2022-07-21 05:19:02,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4144 transitions. [2022-07-21 05:19:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:02,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 05:19:02,666 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -962766154, now seen corresponding path program 1 times [2022-07-21 05:19:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062070518] [2022-07-21 05:19:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062070518] [2022-07-21 05:19:02,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062070518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:02,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:02,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297503889] [2022-07-21 05:19:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:02,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:02,699 INFO L87 Difference]: Start difference. First operand 3152 states and 4144 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,076 INFO L93 Difference]: Finished difference Result 6864 states and 9256 transitions. [2022-07-21 05:19:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:03,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,086 INFO L225 Difference]: With dead ends: 6864 [2022-07-21 05:19:03,086 INFO L226 Difference]: Without dead ends: 3925 [2022-07-21 05:19:03,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:03,091 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 151 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 659 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-07-21 05:19:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3159. [2022-07-21 05:19:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 2390 states have (on average 1.3167364016736403) internal successors, (3147), 2414 states have internal predecessors, (3147), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-07-21 05:19:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4151 transitions. [2022-07-21 05:19:03,342 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4151 transitions. Word has length 118 [2022-07-21 05:19:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:03,343 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 4151 transitions. [2022-07-21 05:19:03,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4151 transitions. [2022-07-21 05:19:03,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:03,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:03,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:03,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 05:19:03,348 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1404528470, now seen corresponding path program 1 times [2022-07-21 05:19:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:03,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535064539] [2022-07-21 05:19:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:03,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:03,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535064539] [2022-07-21 05:19:03,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535064539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:03,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:03,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949657237] [2022-07-21 05:19:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:03,405 INFO L87 Difference]: Start difference. First operand 3159 states and 4151 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,731 INFO L93 Difference]: Finished difference Result 6831 states and 9219 transitions. [2022-07-21 05:19:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,742 INFO L225 Difference]: With dead ends: 6831 [2022-07-21 05:19:03,755 INFO L226 Difference]: Without dead ends: 3818 [2022-07-21 05:19:03,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:03,762 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 277 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 872 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2022-07-21 05:19:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 2901. [2022-07-21 05:19:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2191 states have (on average 1.3144682793245093) internal successors, (2880), 2210 states have internal predecessors, (2880), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-07-21 05:19:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3808 transitions. [2022-07-21 05:19:03,984 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3808 transitions. Word has length 118 [2022-07-21 05:19:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:03,985 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 3808 transitions. [2022-07-21 05:19:03,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3808 transitions. [2022-07-21 05:19:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 05:19:03,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:03,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2022-07-21 05:19:03,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 05:19:03,990 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1457998733, now seen corresponding path program 1 times [2022-07-21 05:19:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:03,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484038203] [2022-07-21 05:19:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:19:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 05:19:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 05:19:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:19:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:19:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 05:19:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:04,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484038203] [2022-07-21 05:19:04,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484038203] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615030564] [2022-07-21 05:19:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:04,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:04,197 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) [2022-07-21 05:19:04,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:19:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:04,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:04,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 05:19:04,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615030564] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:04,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:04,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-07-21 05:19:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420431841] [2022-07-21 05:19:04,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 05:19:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 05:19:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:19:04,833 INFO L87 Difference]: Start difference. First operand 2901 states and 3808 transitions. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-21 05:19:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:11,152 INFO L93 Difference]: Finished difference Result 10514 states and 14418 transitions. [2022-07-21 05:19:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-21 05:19:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) Word has length 185 [2022-07-21 05:19:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:11,172 INFO L225 Difference]: With dead ends: 10514 [2022-07-21 05:19:11,172 INFO L226 Difference]: Without dead ends: 7856 [2022-07-21 05:19:11,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4892 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2387, Invalid=10953, Unknown=0, NotChecked=0, Total=13340 [2022-07-21 05:19:11,181 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 5585 mSDsluCounter, 5594 mSDsCounter, 0 mSdLazyCounter, 4727 mSolverCounterSat, 2390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5585 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 7117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2390 IncrementalHoareTripleChecker+Valid, 4727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:11,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5585 Valid, 6231 Invalid, 7117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2390 Valid, 4727 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 05:19:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7856 states. [2022-07-21 05:19:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7856 to 4372. [2022-07-21 05:19:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3338 states have (on average 1.3118633912522468) internal successors, (4379), 3363 states have internal predecessors, (4379), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-21 05:19:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 5711 transitions. [2022-07-21 05:19:11,628 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 5711 transitions. Word has length 185 [2022-07-21 05:19:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:11,629 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 5711 transitions. [2022-07-21 05:19:11,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 18 states have internal predecessors, (274), 7 states have call successors, (40), 4 states have call predecessors, (40), 6 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-21 05:19:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 5711 transitions. [2022-07-21 05:19:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 05:19:11,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:11,634 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:11,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 05:19:11,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 17651729, now seen corresponding path program 1 times [2022-07-21 05:19:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146308664] [2022-07-21 05:19:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:19:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 05:19:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 05:19:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:19:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:19:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 05:19:11,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:11,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146308664] [2022-07-21 05:19:11,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146308664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:11,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397090621] [2022-07-21 05:19:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:11,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:11,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:11,995 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) [2022-07-21 05:19:12,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:19:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:12,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:19:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 05:19:12,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 05:19:12,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397090621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:12,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:12,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:19:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746470764] [2022-07-21 05:19:12,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:19:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:19:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:12,500 INFO L87 Difference]: Start difference. First operand 4372 states and 5711 transitions. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:15,272 INFO L93 Difference]: Finished difference Result 11427 states and 15614 transitions. [2022-07-21 05:19:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:19:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 185 [2022-07-21 05:19:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:15,290 INFO L225 Difference]: With dead ends: 11427 [2022-07-21 05:19:15,290 INFO L226 Difference]: Without dead ends: 7426 [2022-07-21 05:19:15,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:19:15,298 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2901 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:15,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2901 Valid, 4424 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 05:19:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2022-07-21 05:19:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 4372. [2022-07-21 05:19:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3338 states have (on average 1.3067705212702216) internal successors, (4362), 3363 states have internal predecessors, (4362), 666 states have call successors, (666), 367 states have call predecessors, (666), 367 states have return successors, (666), 641 states have call predecessors, (666), 666 states have call successors, (666) [2022-07-21 05:19:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 5694 transitions. [2022-07-21 05:19:15,851 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 5694 transitions. Word has length 185 [2022-07-21 05:19:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:15,853 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 5694 transitions. [2022-07-21 05:19:15,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 13 states have internal predecessors, (263), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 5694 transitions. [2022-07-21 05:19:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-21 05:19:15,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:15,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2022-07-21 05:19:15,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:16,078 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,SelfDestructingSolverStorable28 [2022-07-21 05:19:16,079 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 264749648, now seen corresponding path program 1 times [2022-07-21 05:19:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:16,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954137072] [2022-07-21 05:19:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 05:19:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:19:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 05:19:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 05:19:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:19:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:19:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:19:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 05:19:16,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:16,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954137072] [2022-07-21 05:19:16,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954137072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:16,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:16,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376317662] [2022-07-21 05:19:16,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:16,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:16,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:16,173 INFO L87 Difference]: Start difference. First operand 4372 states and 5694 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:17,509 INFO L93 Difference]: Finished difference Result 14760 states and 19864 transitions. [2022-07-21 05:19:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:19:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 194 [2022-07-21 05:19:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:17,534 INFO L225 Difference]: With dead ends: 14760 [2022-07-21 05:19:17,534 INFO L226 Difference]: Without dead ends: 10786 [2022-07-21 05:19:17,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:17,544 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 808 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:17,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2958 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10786 states. [2022-07-21 05:19:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10786 to 6092. [2022-07-21 05:19:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 4582 states have (on average 1.304452204277608) internal successors, (5977), 4619 states have internal predecessors, (5977), 986 states have call successors, (986), 523 states have call predecessors, (986), 523 states have return successors, (986), 949 states have call predecessors, (986), 986 states have call successors, (986) [2022-07-21 05:19:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 7949 transitions. [2022-07-21 05:19:18,160 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 7949 transitions. Word has length 194 [2022-07-21 05:19:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:18,160 INFO L495 AbstractCegarLoop]: Abstraction has 6092 states and 7949 transitions. [2022-07-21 05:19:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 7949 transitions. [2022-07-21 05:19:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-21 05:19:18,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:18,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2022-07-21 05:19:18,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 05:19:18,168 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash 322517035, now seen corresponding path program 1 times [2022-07-21 05:19:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:18,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245562072] [2022-07-21 05:19:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 05:19:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:19:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 05:19:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:19:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:19:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:19:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 05:19:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:18,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:18,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245562072] [2022-07-21 05:19:18,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245562072] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:18,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356567864] [2022-07-21 05:19:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:18,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:18,264 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) [2022-07-21 05:19:18,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:19:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:18,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:18,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:18,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 05:19:18,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356567864] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:18,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:18,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-21 05:19:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225826212] [2022-07-21 05:19:18,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:18,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 05:19:18,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 05:19:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:19:18,796 INFO L87 Difference]: Start difference. First operand 6092 states and 7949 transitions. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-21 05:19:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,047 INFO L93 Difference]: Finished difference Result 25522 states and 34804 transitions. [2022-07-21 05:19:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-07-21 05:19:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) Word has length 196 [2022-07-21 05:19:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,111 INFO L225 Difference]: With dead ends: 25522 [2022-07-21 05:19:27,112 INFO L226 Difference]: Without dead ends: 19828 [2022-07-21 05:19:27,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8834 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3372, Invalid=18384, Unknown=0, NotChecked=0, Total=21756 [2022-07-21 05:19:27,132 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 11472 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 5284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11472 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 9386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5284 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:27,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11472 Valid, 6176 Invalid, 9386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5284 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-21 05:19:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19828 states. [2022-07-21 05:19:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19828 to 8800. [2022-07-21 05:19:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8800 states, 6592 states have (on average 1.2999089805825244) internal successors, (8569), 6647 states have internal predecessors, (8569), 1438 states have call successors, (1438), 769 states have call predecessors, (1438), 769 states have return successors, (1438), 1383 states have call predecessors, (1438), 1438 states have call successors, (1438) [2022-07-21 05:19:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8800 states to 8800 states and 11445 transitions. [2022-07-21 05:19:28,222 INFO L78 Accepts]: Start accepts. Automaton has 8800 states and 11445 transitions. Word has length 196 [2022-07-21 05:19:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,224 INFO L495 AbstractCegarLoop]: Abstraction has 8800 states and 11445 transitions. [2022-07-21 05:19:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 15 states have internal predecessors, (290), 7 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2022-07-21 05:19:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8800 states and 11445 transitions. [2022-07-21 05:19:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 05:19:28,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2022-07-21 05:19:28,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 05:19:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:28,455 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash -607517794, now seen corresponding path program 1 times [2022-07-21 05:19:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:28,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536106859] [2022-07-21 05:19:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:19:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:19:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:19:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:19:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:28,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536106859] [2022-07-21 05:19:28,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536106859] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:28,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364864497] [2022-07-21 05:19:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:28,624 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) [2022-07-21 05:19:28,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:19:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 05:19:28,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:19:28,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:19:28,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364864497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:28,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:28,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-21 05:19:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987353386] [2022-07-21 05:19:28,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:19:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:19:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:19:28,976 INFO L87 Difference]: Start difference. First operand 8800 states and 11445 transitions. Second operand has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:34,653 INFO L93 Difference]: Finished difference Result 26193 states and 35896 transitions. [2022-07-21 05:19:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-21 05:19:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 197 [2022-07-21 05:19:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:34,702 INFO L225 Difference]: With dead ends: 26193 [2022-07-21 05:19:34,702 INFO L226 Difference]: Without dead ends: 17713 [2022-07-21 05:19:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=662, Invalid=4168, Unknown=0, NotChecked=0, Total=4830 [2022-07-21 05:19:34,715 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2578 mSDsluCounter, 8149 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 9006 SdHoareTripleChecker+Invalid, 6045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:34,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 9006 Invalid, 6045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:19:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17713 states. [2022-07-21 05:19:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17713 to 10196. [2022-07-21 05:19:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10196 states, 7614 states have (on average 1.2966903073286051) internal successors, (9873), 7679 states have internal predecessors, (9873), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-21 05:19:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10196 states to 10196 states and 13225 transitions. [2022-07-21 05:19:36,128 INFO L78 Accepts]: Start accepts. Automaton has 10196 states and 13225 transitions. Word has length 197 [2022-07-21 05:19:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:36,128 INFO L495 AbstractCegarLoop]: Abstraction has 10196 states and 13225 transitions. [2022-07-21 05:19:36,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 16 states have internal predecessors, (247), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10196 states and 13225 transitions. [2022-07-21 05:19:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 05:19:36,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:36,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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] [2022-07-21 05:19:36,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:36,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:36,359 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash 266392652, now seen corresponding path program 1 times [2022-07-21 05:19:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:36,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259865954] [2022-07-21 05:19:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:19:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:19:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 05:19:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 05:19:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:19:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 05:19:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:19:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:36,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259865954] [2022-07-21 05:19:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259865954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510314598] [2022-07-21 05:19:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:36,493 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) [2022-07-21 05:19:36,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:19:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:19:36,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:19:36,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:19:36,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510314598] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:36,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:36,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-21 05:19:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807268502] [2022-07-21 05:19:36,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:36,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 05:19:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 05:19:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 05:19:36,937 INFO L87 Difference]: Start difference. First operand 10196 states and 13225 transitions. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:19:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:39,006 INFO L93 Difference]: Finished difference Result 24217 states and 32536 transitions. [2022-07-21 05:19:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:19:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 205 [2022-07-21 05:19:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:39,042 INFO L225 Difference]: With dead ends: 24217 [2022-07-21 05:19:39,042 INFO L226 Difference]: Without dead ends: 14409 [2022-07-21 05:19:39,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 439 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:19:39,057 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 284 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:39,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 2626 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14409 states. [2022-07-21 05:19:40,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14409 to 10196. [2022-07-21 05:19:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10196 states, 7614 states have (on average 1.2957709482532178) internal successors, (9866), 7679 states have internal predecessors, (9866), 1676 states have call successors, (1676), 905 states have call predecessors, (1676), 905 states have return successors, (1676), 1611 states have call predecessors, (1676), 1676 states have call successors, (1676) [2022-07-21 05:19:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10196 states to 10196 states and 13218 transitions. [2022-07-21 05:19:40,446 INFO L78 Accepts]: Start accepts. Automaton has 10196 states and 13218 transitions. Word has length 205 [2022-07-21 05:19:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:40,447 INFO L495 AbstractCegarLoop]: Abstraction has 10196 states and 13218 transitions. [2022-07-21 05:19:40,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 8 states have internal predecessors, (180), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:19:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 10196 states and 13218 transitions. [2022-07-21 05:19:40,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 05:19:40,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:40,475 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:19:40,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-21 05:19:40,676 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash -395672383, now seen corresponding path program 1 times [2022-07-21 05:19:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:40,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7681425] [2022-07-21 05:19:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:19:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:19:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:19:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:19:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:19:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 05:19:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 05:19:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 05:19:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:19:40,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:40,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7681425] [2022-07-21 05:19:40,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7681425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:40,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:40,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:40,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619642370] [2022-07-21 05:19:40,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:40,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:40,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:40,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:40,793 INFO L87 Difference]: Start difference. First operand 10196 states and 13218 transitions. Second operand has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:41,700 INFO L93 Difference]: Finished difference Result 16446 states and 21413 transitions. [2022-07-21 05:19:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 212 [2022-07-21 05:19:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:41,722 INFO L225 Difference]: With dead ends: 16446 [2022-07-21 05:19:41,723 INFO L226 Difference]: Without dead ends: 6606 [2022-07-21 05:19:41,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:41,734 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:41,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1120 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2022-07-21 05:19:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 6606. [2022-07-21 05:19:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 4948 states have (on average 1.2954729183508489) internal successors, (6410), 4989 states have internal predecessors, (6410), 1080 states have call successors, (1080), 577 states have call predecessors, (1080), 577 states have return successors, (1080), 1039 states have call predecessors, (1080), 1080 states have call successors, (1080) [2022-07-21 05:19:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 8570 transitions. [2022-07-21 05:19:42,686 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 8570 transitions. Word has length 212 [2022-07-21 05:19:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:42,687 INFO L495 AbstractCegarLoop]: Abstraction has 6606 states and 8570 transitions. [2022-07-21 05:19:42,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.5) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 8570 transitions. [2022-07-21 05:19:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 05:19:42,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:42,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:19:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 05:19:42,724 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -56266143, now seen corresponding path program 1 times [2022-07-21 05:19:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980229859] [2022-07-21 05:19:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:19:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:19:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:19:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:19:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 05:19:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 05:19:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 05:19:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 05:19:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:42,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980229859] [2022-07-21 05:19:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980229859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772295126] [2022-07-21 05:19:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:42,872 INFO L87 Difference]: Start difference. First operand 6606 states and 8570 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:19:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:43,692 INFO L93 Difference]: Finished difference Result 12559 states and 16371 transitions. [2022-07-21 05:19:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:43,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 212 [2022-07-21 05:19:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:43,705 INFO L225 Difference]: With dead ends: 12559 [2022-07-21 05:19:43,706 INFO L226 Difference]: Without dead ends: 6242 [2022-07-21 05:19:43,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:43,713 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 277 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:43,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 426 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2022-07-21 05:19:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 6242. [2022-07-21 05:19:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6242 states, 4678 states have (on average 1.2967079948696023) internal successors, (6066), 4717 states have internal predecessors, (6066), 1020 states have call successors, (1020), 543 states have call predecessors, (1020), 543 states have return successors, (1020), 981 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-07-21 05:19:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 8106 transitions. [2022-07-21 05:19:44,466 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 8106 transitions. Word has length 212 [2022-07-21 05:19:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:44,466 INFO L495 AbstractCegarLoop]: Abstraction has 6242 states and 8106 transitions. [2022-07-21 05:19:44,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:19:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 8106 transitions. [2022-07-21 05:19:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 05:19:44,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:44,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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, 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] [2022-07-21 05:19:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 05:19:44,474 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash 598590481, now seen corresponding path program 1 times [2022-07-21 05:19:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:44,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380544457] [2022-07-21 05:19:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:19:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:19:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:19:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:19:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 05:19:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:19:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:19:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:19:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:19:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-21 05:19:44,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:44,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380544457] [2022-07-21 05:19:44,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380544457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:44,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:44,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470894085] [2022-07-21 05:19:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:44,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:44,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:44,544 INFO L87 Difference]: Start difference. First operand 6242 states and 8106 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 05:19:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:45,338 INFO L93 Difference]: Finished difference Result 11965 states and 15594 transitions. [2022-07-21 05:19:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 214 [2022-07-21 05:19:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:45,350 INFO L225 Difference]: With dead ends: 11965 [2022-07-21 05:19:45,350 INFO L226 Difference]: Without dead ends: 5930 [2022-07-21 05:19:45,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:45,356 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 277 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:45,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 428 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2022-07-21 05:19:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 5772. [2022-07-21 05:19:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 4324 states have (on average 1.299722479185939) internal successors, (5620), 4360 states have internal predecessors, (5620), 943 states have call successors, (943), 504 states have call predecessors, (943), 504 states have return successors, (943), 907 states have call predecessors, (943), 943 states have call successors, (943) [2022-07-21 05:19:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 7506 transitions. [2022-07-21 05:19:46,046 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 7506 transitions. Word has length 214 [2022-07-21 05:19:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:46,047 INFO L495 AbstractCegarLoop]: Abstraction has 5772 states and 7506 transitions. [2022-07-21 05:19:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 05:19:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 7506 transitions. [2022-07-21 05:19:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-21 05:19:46,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:46,054 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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, 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] [2022-07-21 05:19:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 05:19:46,054 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1490841889, now seen corresponding path program 1 times [2022-07-21 05:19:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448323265] [2022-07-21 05:19:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:19:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:19:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:19:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 05:19:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:19:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448323265] [2022-07-21 05:19:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448323265] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:46,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841579031] [2022-07-21 05:19:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:46,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:46,195 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) [2022-07-21 05:19:46,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:19:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 05:19:46,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 82 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:19:46,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:19:47,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841579031] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:47,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:47,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2022-07-21 05:19:47,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296078660] [2022-07-21 05:19:47,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:47,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 05:19:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 05:19:47,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:19:47,041 INFO L87 Difference]: Start difference. First operand 5772 states and 7506 transitions. Second operand has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-21 05:19:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:52,613 INFO L93 Difference]: Finished difference Result 15385 states and 20751 transitions. [2022-07-21 05:19:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-21 05:19:52,614 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) Word has length 213 [2022-07-21 05:19:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:52,641 INFO L225 Difference]: With dead ends: 15385 [2022-07-21 05:19:52,641 INFO L226 Difference]: Without dead ends: 9908 [2022-07-21 05:19:52,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 444 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=775, Invalid=3647, Unknown=0, NotChecked=0, Total=4422 [2022-07-21 05:19:52,652 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 2808 mSDsluCounter, 7916 mSDsCounter, 0 mSdLazyCounter, 6533 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 8031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 6533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:52,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 8551 Invalid, 8031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 6533 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 05:19:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2022-07-21 05:19:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6946. [2022-07-21 05:19:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5206 states have (on average 1.2971571263926238) internal successors, (6753), 5250 states have internal predecessors, (6753), 1128 states have call successors, (1128), 611 states have call predecessors, (1128), 611 states have return successors, (1128), 1084 states have call predecessors, (1128), 1128 states have call successors, (1128) [2022-07-21 05:19:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 9009 transitions. [2022-07-21 05:19:53,687 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 9009 transitions. Word has length 213 [2022-07-21 05:19:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 9009 transitions. [2022-07-21 05:19:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.96) internal successors, (324), 25 states have internal predecessors, (324), 9 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 9 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-21 05:19:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 9009 transitions. [2022-07-21 05:19:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-21 05:19:53,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:53,696 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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, 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] [2022-07-21 05:19:53,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 05:19:53,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-21 05:19:53,909 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:53,909 INFO L85 PathProgramCache]: Analyzing trace with hash -842249119, now seen corresponding path program 1 times [2022-07-21 05:19:53,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:53,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525093067] [2022-07-21 05:19:53,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:53,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:19:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:19:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:19:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 05:19:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:19:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:53,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525093067] [2022-07-21 05:19:53,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525093067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:53,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:53,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064444861] [2022-07-21 05:19:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:53,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:53,976 INFO L87 Difference]: Start difference. First operand 6946 states and 9009 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:19:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:54,889 INFO L93 Difference]: Finished difference Result 13114 states and 17079 transitions. [2022-07-21 05:19:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:54,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 213 [2022-07-21 05:19:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:54,908 INFO L225 Difference]: With dead ends: 13114 [2022-07-21 05:19:54,910 INFO L226 Difference]: Without dead ends: 6379 [2022-07-21 05:19:54,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:54,923 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 225 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:54,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 440 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2022-07-21 05:19:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 6371. [2022-07-21 05:19:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6371 states, 4785 states have (on average 1.2971786833855798) internal successors, (6207), 4825 states have internal predecessors, (6207), 1031 states have call successors, (1031), 554 states have call predecessors, (1031), 554 states have return successors, (1031), 991 states have call predecessors, (1031), 1031 states have call successors, (1031) [2022-07-21 05:19:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 8269 transitions. [2022-07-21 05:19:55,852 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 8269 transitions. Word has length 213 [2022-07-21 05:19:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:55,852 INFO L495 AbstractCegarLoop]: Abstraction has 6371 states and 8269 transitions. [2022-07-21 05:19:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:19:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 8269 transitions. [2022-07-21 05:19:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:19:55,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:55,858 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 05:19:55,858 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 869822417, now seen corresponding path program 1 times [2022-07-21 05:19:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:55,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622319007] [2022-07-21 05:19:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 05:19:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:19:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:19:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:19:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:19:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:19:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:19:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:19:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 05:19:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622319007] [2022-07-21 05:19:55,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622319007] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866751585] [2022-07-21 05:19:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:55,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:55,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:55,968 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) [2022-07-21 05:19:55,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:19:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 05:19:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 05:19:56,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 05:19:56,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866751585] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:56,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:56,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-21 05:19:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715801016] [2022-07-21 05:19:56,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:56,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:19:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:19:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:19:56,498 INFO L87 Difference]: Start difference. First operand 6371 states and 8269 transitions. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-21 05:19:58,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:58,364 INFO L93 Difference]: Finished difference Result 18033 states and 23421 transitions. [2022-07-21 05:19:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 05:19:58,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 215 [2022-07-21 05:19:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:58,389 INFO L225 Difference]: With dead ends: 18033 [2022-07-21 05:19:58,390 INFO L226 Difference]: Without dead ends: 11957 [2022-07-21 05:19:58,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-21 05:19:58,401 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 743 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:58,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 3229 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11957 states. [2022-07-21 05:19:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11957 to 9094. [2022-07-21 05:19:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 6883 states have (on average 1.2818538428011041) internal successors, (8823), 6951 states have internal predecessors, (8823), 1421 states have call successors, (1421), 789 states have call predecessors, (1421), 789 states have return successors, (1421), 1353 states have call predecessors, (1421), 1421 states have call successors, (1421) [2022-07-21 05:19:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 11665 transitions. [2022-07-21 05:19:59,752 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 11665 transitions. Word has length 215 [2022-07-21 05:19:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:59,752 INFO L495 AbstractCegarLoop]: Abstraction has 9094 states and 11665 transitions. [2022-07-21 05:19:59,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 9 states have internal predecessors, (192), 4 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-21 05:19:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 11665 transitions. [2022-07-21 05:19:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 05:19:59,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:59,757 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:19:59,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 05:19:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:59,975 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1951760898, now seen corresponding path program 1 times [2022-07-21 05:19:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:59,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968417771] [2022-07-21 05:19:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:59,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:20:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:20:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:20:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 05:20:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:00,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:00,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968417771] [2022-07-21 05:20:00,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968417771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:00,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797121523] [2022-07-21 05:20:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:00,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:00,205 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) [2022-07-21 05:20:00,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:20:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 05:20:00,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:00,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:01,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797121523] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:01,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:01,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 10] total 22 [2022-07-21 05:20:01,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783658144] [2022-07-21 05:20:01,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 05:20:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 05:20:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:20:01,357 INFO L87 Difference]: Start difference. First operand 9094 states and 11665 transitions. Second operand has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:06,692 INFO L93 Difference]: Finished difference Result 21510 states and 28883 transitions. [2022-07-21 05:20:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 05:20:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 214 [2022-07-21 05:20:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:06,724 INFO L225 Difference]: With dead ends: 21510 [2022-07-21 05:20:06,725 INFO L226 Difference]: Without dead ends: 14718 [2022-07-21 05:20:06,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1907, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 05:20:06,735 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 6048 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 2315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6048 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 4964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2315 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6048 Valid, 3301 Invalid, 4964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2315 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:20:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2022-07-21 05:20:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 9094. [2022-07-21 05:20:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 6883 states have (on average 1.2789481330815051) internal successors, (8803), 6951 states have internal predecessors, (8803), 1421 states have call successors, (1421), 789 states have call predecessors, (1421), 789 states have return successors, (1421), 1353 states have call predecessors, (1421), 1421 states have call successors, (1421) [2022-07-21 05:20:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 11645 transitions. [2022-07-21 05:20:08,158 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 11645 transitions. Word has length 214 [2022-07-21 05:20:08,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:08,159 INFO L495 AbstractCegarLoop]: Abstraction has 9094 states and 11645 transitions. [2022-07-21 05:20:08,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 11645 transitions. [2022-07-21 05:20:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:20:08,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:08,163 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:20:08,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-21 05:20:08,382 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1602789837, now seen corresponding path program 1 times [2022-07-21 05:20:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:08,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40138279] [2022-07-21 05:20:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40138279] [2022-07-21 05:20:08,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40138279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198750172] [2022-07-21 05:20:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:08,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:08,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:08,552 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:08,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:20:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 05:20:08,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:08,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198750172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:09,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:09,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-21 05:20:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855193505] [2022-07-21 05:20:09,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:09,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:20:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:20:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:20:09,090 INFO L87 Difference]: Start difference. First operand 9094 states and 11645 transitions. Second operand has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:20:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:16,562 INFO L93 Difference]: Finished difference Result 40327 states and 54874 transitions. [2022-07-21 05:20:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-21 05:20:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 215 [2022-07-21 05:20:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:16,638 INFO L225 Difference]: With dead ends: 40327 [2022-07-21 05:20:16,639 INFO L226 Difference]: Without dead ends: 32125 [2022-07-21 05:20:16,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-21 05:20:16,656 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 2243 mSDsluCounter, 9098 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 10372 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:16,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 10372 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:20:16,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32125 states. [2022-07-21 05:20:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32125 to 18129. [2022-07-21 05:20:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18129 states, 13989 states have (on average 1.2802916577310743) internal successors, (17910), 14108 states have internal predecessors, (17910), 2627 states have call successors, (2627), 1512 states have call predecessors, (2627), 1512 states have return successors, (2627), 2508 states have call predecessors, (2627), 2627 states have call successors, (2627) [2022-07-21 05:20:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18129 states to 18129 states and 23164 transitions. [2022-07-21 05:20:19,759 INFO L78 Accepts]: Start accepts. Automaton has 18129 states and 23164 transitions. Word has length 215 [2022-07-21 05:20:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:19,760 INFO L495 AbstractCegarLoop]: Abstraction has 18129 states and 23164 transitions. [2022-07-21 05:20:19,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:20:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18129 states and 23164 transitions. [2022-07-21 05:20:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:20:19,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:19,767 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:20:19,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:19,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:19,985 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash -954197067, now seen corresponding path program 1 times [2022-07-21 05:20:19,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:19,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626102544] [2022-07-21 05:20:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-21 05:20:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626102544] [2022-07-21 05:20:20,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626102544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:20,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:20,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:20:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564109838] [2022-07-21 05:20:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:20:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:20:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:20:20,036 INFO L87 Difference]: Start difference. First operand 18129 states and 23164 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:20:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:22,163 INFO L93 Difference]: Finished difference Result 31087 states and 39877 transitions. [2022-07-21 05:20:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:20:22,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 215 [2022-07-21 05:20:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:22,192 INFO L225 Difference]: With dead ends: 31087 [2022-07-21 05:20:22,193 INFO L226 Difference]: Without dead ends: 13896 [2022-07-21 05:20:22,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:20:22,214 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 232 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:22,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 437 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:20:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13896 states. [2022-07-21 05:20:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13896 to 13853. [2022-07-21 05:20:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13853 states, 10770 states have (on average 1.280594243268338) internal successors, (13792), 10855 states have internal predecessors, (13792), 1958 states have call successors, (1958), 1124 states have call predecessors, (1958), 1124 states have return successors, (1958), 1873 states have call predecessors, (1958), 1958 states have call successors, (1958) [2022-07-21 05:20:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 17708 transitions. [2022-07-21 05:20:24,329 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 17708 transitions. Word has length 215 [2022-07-21 05:20:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:24,329 INFO L495 AbstractCegarLoop]: Abstraction has 13853 states and 17708 transitions. [2022-07-21 05:20:24,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:20:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 17708 transitions. [2022-07-21 05:20:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 05:20:24,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:24,335 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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, 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] [2022-07-21 05:20:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 05:20:24,335 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash -763015856, now seen corresponding path program 1 times [2022-07-21 05:20:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193606873] [2022-07-21 05:20:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 05:20:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:20:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:20:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:20:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:20:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:20:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:20:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:20:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 05:20:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:24,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193606873] [2022-07-21 05:20:24,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193606873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:24,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:24,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:20:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726965016] [2022-07-21 05:20:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:24,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:20:24,402 INFO L87 Difference]: Start difference. First operand 13853 states and 17708 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:20:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:28,931 INFO L93 Difference]: Finished difference Result 36689 states and 47893 transitions. [2022-07-21 05:20:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:20:28,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 217 [2022-07-21 05:20:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:28,988 INFO L225 Difference]: With dead ends: 36689 [2022-07-21 05:20:28,988 INFO L226 Difference]: Without dead ends: 26489 [2022-07-21 05:20:29,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:20:29,004 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 602 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:29,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2892 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26489 states. [2022-07-21 05:20:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26489 to 17226. [2022-07-21 05:20:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2718468638874176) internal successors, (16810), 13336 states have internal predecessors, (16810), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-21 05:20:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21902 transitions. [2022-07-21 05:20:31,930 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21902 transitions. Word has length 217 [2022-07-21 05:20:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:31,930 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21902 transitions. [2022-07-21 05:20:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:20:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21902 transitions. [2022-07-21 05:20:31,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 05:20:31,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:31,938 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-07-21 05:20:31,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 05:20:31,938 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:31,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1737845505, now seen corresponding path program 1 times [2022-07-21 05:20:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:31,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037516506] [2022-07-21 05:20:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:20:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:20:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:20:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:20:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:20:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:20:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:20:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:20:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:20:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:20:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:20:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:20:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:20:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:20:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:20:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:32,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037516506] [2022-07-21 05:20:32,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037516506] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057080284] [2022-07-21 05:20:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:32,089 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:32,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:20:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:32,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 05:20:32,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 05:20:32,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:20:32,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057080284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:32,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:20:32,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-21 05:20:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570788930] [2022-07-21 05:20:32,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:32,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:32,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:20:32,401 INFO L87 Difference]: Start difference. First operand 17226 states and 21902 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:20:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:36,271 INFO L93 Difference]: Finished difference Result 37262 states and 48539 transitions. [2022-07-21 05:20:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:20:36,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 218 [2022-07-21 05:20:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:36,328 INFO L225 Difference]: With dead ends: 37262 [2022-07-21 05:20:36,328 INFO L226 Difference]: Without dead ends: 21174 [2022-07-21 05:20:36,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:20:36,351 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 689 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:36,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2202 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:20:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21174 states. [2022-07-21 05:20:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21174 to 17226. [2022-07-21 05:20:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2655670727093895) internal successors, (16727), 13336 states have internal predecessors, (16727), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-21 05:20:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21819 transitions. [2022-07-21 05:20:39,204 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21819 transitions. Word has length 218 [2022-07-21 05:20:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:39,205 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21819 transitions. [2022-07-21 05:20:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:20:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21819 transitions. [2022-07-21 05:20:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 05:20:39,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:39,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-07-21 05:20:39,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-21 05:20:39,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-21 05:20:39,428 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1287533947, now seen corresponding path program 1 times [2022-07-21 05:20:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:39,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286009027] [2022-07-21 05:20:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:39,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:20:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:39,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:39,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286009027] [2022-07-21 05:20:39,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286009027] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:39,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968617245] [2022-07-21 05:20:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:39,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:39,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:39,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:20:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:20:39,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:39,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:40,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968617245] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:40,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:40,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:20:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958526507] [2022-07-21 05:20:40,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:40,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:20:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:20:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:20:40,127 INFO L87 Difference]: Start difference. First operand 17226 states and 21819 transitions. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:20:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:44,350 INFO L93 Difference]: Finished difference Result 33253 states and 42454 transitions. [2022-07-21 05:20:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:20:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 223 [2022-07-21 05:20:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:44,392 INFO L225 Difference]: With dead ends: 33253 [2022-07-21 05:20:44,392 INFO L226 Difference]: Without dead ends: 20283 [2022-07-21 05:20:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:20:44,410 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1462 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:44,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 5225 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:20:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2022-07-21 05:20:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 17226. [2022-07-21 05:20:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17226 states, 13217 states have (on average 1.2617840659756374) internal successors, (16677), 13336 states have internal predecessors, (16677), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-21 05:20:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17226 states to 17226 states and 21769 transitions. [2022-07-21 05:20:47,273 INFO L78 Accepts]: Start accepts. Automaton has 17226 states and 21769 transitions. Word has length 223 [2022-07-21 05:20:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:47,273 INFO L495 AbstractCegarLoop]: Abstraction has 17226 states and 21769 transitions. [2022-07-21 05:20:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:20:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17226 states and 21769 transitions. [2022-07-21 05:20:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 05:20:47,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:47,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:20:47,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-21 05:20:47,498 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash -477408815, now seen corresponding path program 1 times [2022-07-21 05:20:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94901463] [2022-07-21 05:20:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:20:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94901463] [2022-07-21 05:20:47,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94901463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:47,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:47,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:20:47,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884583807] [2022-07-21 05:20:47,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:47,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:20:47,600 INFO L87 Difference]: Start difference. First operand 17226 states and 21769 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:20:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:51,697 INFO L93 Difference]: Finished difference Result 33917 states and 43917 transitions. [2022-07-21 05:20:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:20:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 223 [2022-07-21 05:20:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:51,747 INFO L225 Difference]: With dead ends: 33917 [2022-07-21 05:20:51,748 INFO L226 Difference]: Without dead ends: 21333 [2022-07-21 05:20:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:20:51,768 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 718 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2367 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:20:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2022-07-21 05:20:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 17217. [2022-07-21 05:20:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17217 states, 13208 states have (on average 1.2605996365838885) internal successors, (16650), 13327 states have internal predecessors, (16650), 2546 states have call successors, (2546), 1462 states have call predecessors, (2546), 1462 states have return successors, (2546), 2427 states have call predecessors, (2546), 2546 states have call successors, (2546) [2022-07-21 05:20:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17217 states to 17217 states and 21742 transitions. [2022-07-21 05:20:54,694 INFO L78 Accepts]: Start accepts. Automaton has 17217 states and 21742 transitions. Word has length 223 [2022-07-21 05:20:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:54,695 INFO L495 AbstractCegarLoop]: Abstraction has 17217 states and 21742 transitions. [2022-07-21 05:20:54,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:20:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 17217 states and 21742 transitions. [2022-07-21 05:20:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 05:20:54,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:54,701 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-07-21 05:20:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 05:20:54,702 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1443868945, now seen corresponding path program 1 times [2022-07-21 05:20:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858642164] [2022-07-21 05:20:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:20:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:20:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:20:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:20:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:20:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:20:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:20:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 05:20:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:20:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 05:20:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:20:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:20:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:20:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:20:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:20:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 05:20:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 05:20:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858642164] [2022-07-21 05:20:54,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858642164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781808615] [2022-07-21 05:20:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:54,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:54,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:54,800 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:54,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:20:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:54,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:20:54,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:20:55,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 05:20:55,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781808615] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:55,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:55,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:20:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918192631] [2022-07-21 05:20:55,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:55,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:20:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:20:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:20:55,208 INFO L87 Difference]: Start difference. First operand 17217 states and 21742 transitions. Second operand has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:21:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:04,228 INFO L93 Difference]: Finished difference Result 46088 states and 61283 transitions. [2022-07-21 05:21:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:21:04,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 226 [2022-07-21 05:21:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:04,298 INFO L225 Difference]: With dead ends: 46088 [2022-07-21 05:21:04,299 INFO L226 Difference]: Without dead ends: 30411 [2022-07-21 05:21:04,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:21:04,326 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2596 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 1260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 5759 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1260 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 5759 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1260 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:21:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30411 states. [2022-07-21 05:21:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30411 to 17603. [2022-07-21 05:21:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17603 states, 13556 states have (on average 1.259294777220419) internal successors, (17071), 13674 states have internal predecessors, (17071), 2565 states have call successors, (2565), 1481 states have call predecessors, (2565), 1481 states have return successors, (2565), 2447 states have call predecessors, (2565), 2565 states have call successors, (2565) [2022-07-21 05:21:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 22201 transitions. [2022-07-21 05:21:07,781 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 22201 transitions. Word has length 226 [2022-07-21 05:21:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:07,781 INFO L495 AbstractCegarLoop]: Abstraction has 17603 states and 22201 transitions. [2022-07-21 05:21:07,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:21:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 22201 transitions. [2022-07-21 05:21:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 05:21:07,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:07,790 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:07,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:08,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-21 05:21:08,003 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:08,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1948276665, now seen corresponding path program 1 times [2022-07-21 05:21:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:08,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965686661] [2022-07-21 05:21:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:21:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:21:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:21:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:21:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:21:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:21:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 05:21:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 05:21:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:08,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965686661] [2022-07-21 05:21:08,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965686661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:08,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:08,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:21:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472246495] [2022-07-21 05:21:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:21:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:21:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:21:08,086 INFO L87 Difference]: Start difference. First operand 17603 states and 22201 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:12,089 INFO L93 Difference]: Finished difference Result 34852 states and 44433 transitions. [2022-07-21 05:21:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:21:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 225 [2022-07-21 05:21:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:12,129 INFO L225 Difference]: With dead ends: 34852 [2022-07-21 05:21:12,130 INFO L226 Difference]: Without dead ends: 21791 [2022-07-21 05:21:12,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:21:12,143 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 452 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:12,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1275 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:21:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21791 states. [2022-07-21 05:21:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21791 to 20155. [2022-07-21 05:21:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20155 states, 15459 states have (on average 1.2544149039394528) internal successors, (19392), 15595 states have internal predecessors, (19392), 2981 states have call successors, (2981), 1714 states have call predecessors, (2981), 1714 states have return successors, (2981), 2845 states have call predecessors, (2981), 2981 states have call successors, (2981) [2022-07-21 05:21:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20155 states to 20155 states and 25354 transitions. [2022-07-21 05:21:15,645 INFO L78 Accepts]: Start accepts. Automaton has 20155 states and 25354 transitions. Word has length 225 [2022-07-21 05:21:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:15,646 INFO L495 AbstractCegarLoop]: Abstraction has 20155 states and 25354 transitions. [2022-07-21 05:21:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20155 states and 25354 transitions. [2022-07-21 05:21:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 05:21:15,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:15,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 05:21:15,654 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:15,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1647592022, now seen corresponding path program 1 times [2022-07-21 05:21:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:15,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496130167] [2022-07-21 05:21:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:21:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:21:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:21:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:21:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:21:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:21:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:21:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:15,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:15,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496130167] [2022-07-21 05:21:15,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496130167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:15,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477249157] [2022-07-21 05:21:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:15,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:15,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:15,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:15,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 05:21:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:16,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 05:21:16,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 91 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:21:16,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:16,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477249157] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:16,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:16,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 21 [2022-07-21 05:21:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852659996] [2022-07-21 05:21:16,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:16,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 05:21:16,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 05:21:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:21:16,925 INFO L87 Difference]: Start difference. First operand 20155 states and 25354 transitions. Second operand has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:21:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:25,520 INFO L93 Difference]: Finished difference Result 43273 states and 55976 transitions. [2022-07-21 05:21:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 05:21:25,521 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 226 [2022-07-21 05:21:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:25,592 INFO L225 Difference]: With dead ends: 43273 [2022-07-21 05:21:25,592 INFO L226 Difference]: Without dead ends: 26064 [2022-07-21 05:21:25,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 478 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-07-21 05:21:25,617 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4989 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 2314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2314 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:25,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 3377 Invalid, 5379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2314 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 05:21:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26064 states. [2022-07-21 05:21:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26064 to 19644. [2022-07-21 05:21:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19644 states, 15057 states have (on average 1.251378096566381) internal successors, (18842), 15188 states have internal predecessors, (18842), 2912 states have call successors, (2912), 1674 states have call predecessors, (2912), 1674 states have return successors, (2912), 2781 states have call predecessors, (2912), 2912 states have call successors, (2912) [2022-07-21 05:21:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19644 states to 19644 states and 24666 transitions. [2022-07-21 05:21:29,438 INFO L78 Accepts]: Start accepts. Automaton has 19644 states and 24666 transitions. Word has length 226 [2022-07-21 05:21:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:29,438 INFO L495 AbstractCegarLoop]: Abstraction has 19644 states and 24666 transitions. [2022-07-21 05:21:29,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:21:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19644 states and 24666 transitions. [2022-07-21 05:21:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 05:21:29,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:29,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 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, 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] [2022-07-21 05:21:29,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:29,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-21 05:21:29,655 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1284695429, now seen corresponding path program 1 times [2022-07-21 05:21:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566411533] [2022-07-21 05:21:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 05:21:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:21:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 05:21:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 05:21:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 05:21:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 05:21:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-21 05:21:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:21:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566411533] [2022-07-21 05:21:29,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566411533] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472509153] [2022-07-21 05:21:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:29,765 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:29,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 05:21:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:29,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:21:30,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:21:30,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472509153] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:30,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:30,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:21:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740298407] [2022-07-21 05:21:30,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:30,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:21:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:21:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:21:30,313 INFO L87 Difference]: Start difference. First operand 19644 states and 24666 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:21:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:37,020 INFO L93 Difference]: Finished difference Result 42562 states and 55402 transitions. [2022-07-21 05:21:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:21:37,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 229 [2022-07-21 05:21:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:37,081 INFO L225 Difference]: With dead ends: 42562 [2022-07-21 05:21:37,082 INFO L226 Difference]: Without dead ends: 27209 [2022-07-21 05:21:37,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:21:37,102 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1244 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 5030 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:37,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 5030 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:21:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27209 states. [2022-07-21 05:21:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27209 to 18923. [2022-07-21 05:21:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18923 states, 14532 states have (on average 1.2470410129369667) internal successors, (18122), 14661 states have internal predecessors, (18122), 2739 states have call successors, (2739), 1651 states have call predecessors, (2739), 1651 states have return successors, (2739), 2610 states have call predecessors, (2739), 2739 states have call successors, (2739) [2022-07-21 05:21:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18923 states to 18923 states and 23600 transitions. [2022-07-21 05:21:40,901 INFO L78 Accepts]: Start accepts. Automaton has 18923 states and 23600 transitions. Word has length 229 [2022-07-21 05:21:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 18923 states and 23600 transitions. [2022-07-21 05:21:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:21:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18923 states and 23600 transitions. [2022-07-21 05:21:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 05:21:40,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:40,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-07-21 05:21:40,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:41,124 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1461146357, now seen corresponding path program 1 times [2022-07-21 05:21:41,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:41,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489438124] [2022-07-21 05:21:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:21:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:21:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:21:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:21:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:21:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:21:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:21:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 05:21:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 05:21:41,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:41,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489438124] [2022-07-21 05:21:41,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489438124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:41,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054968113] [2022-07-21 05:21:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:41,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:41,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:41,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:41,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 05:21:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:41,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 05:21:41,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:21:41,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054968113] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:41,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:41,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-07-21 05:21:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066108802] [2022-07-21 05:21:41,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:21:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:21:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:21:41,819 INFO L87 Difference]: Start difference. First operand 18923 states and 23600 transitions. Second operand has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:21:53,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:53,210 INFO L93 Difference]: Finished difference Result 51050 states and 65398 transitions. [2022-07-21 05:21:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-21 05:21:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 231 [2022-07-21 05:21:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:53,284 INFO L225 Difference]: With dead ends: 51050 [2022-07-21 05:21:53,284 INFO L226 Difference]: Without dead ends: 36206 [2022-07-21 05:21:53,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-07-21 05:21:53,305 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 4162 mSDsluCounter, 10465 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 1866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 11752 SdHoareTripleChecker+Invalid, 4902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1866 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:53,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 11752 Invalid, 4902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1866 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:21:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36206 states. [2022-07-21 05:21:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36206 to 18631. [2022-07-21 05:21:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18631 states, 14268 states have (on average 1.2433417437622651) internal successors, (17740), 14396 states have internal predecessors, (17740), 2695 states have call successors, (2695), 1667 states have call predecessors, (2695), 1667 states have return successors, (2695), 2567 states have call predecessors, (2695), 2695 states have call successors, (2695) [2022-07-21 05:21:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18631 states to 18631 states and 23130 transitions. [2022-07-21 05:21:58,142 INFO L78 Accepts]: Start accepts. Automaton has 18631 states and 23130 transitions. Word has length 231 [2022-07-21 05:21:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:58,142 INFO L495 AbstractCegarLoop]: Abstraction has 18631 states and 23130 transitions. [2022-07-21 05:21:58,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:21:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18631 states and 23130 transitions. [2022-07-21 05:21:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 05:21:58,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:58,150 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 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, 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] [2022-07-21 05:21:58,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-21 05:21:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:58,368 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -175213371, now seen corresponding path program 1 times [2022-07-21 05:21:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299753537] [2022-07-21 05:21:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:21:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:21:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:21:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:21:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:21:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:21:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:21:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 05:21:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 05:21:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 05:21:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:21:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:21:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 05:21:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 05:21:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 05:21:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-21 05:21:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 05:21:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:21:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299753537] [2022-07-21 05:21:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299753537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:58,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657807113] [2022-07-21 05:21:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:58,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:58,503 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:58,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 05:21:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:58,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 05:21:58,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 114 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 05:21:59,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:21:59,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657807113] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:59,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:59,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-07-21 05:21:59,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757754196] [2022-07-21 05:21:59,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 05:21:59,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 05:21:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:21:59,656 INFO L87 Difference]: Start difference. First operand 18631 states and 23130 transitions. Second operand has 25 states, 25 states have (on average 15.44) internal successors, (386), 25 states have internal predecessors, (386), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-07-21 05:23:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:07,689 INFO L93 Difference]: Finished difference Result 122906 states and 163271 transitions. [2022-07-21 05:23:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 722 states. [2022-07-21 05:23:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.44) internal successors, (386), 25 states have internal predecessors, (386), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) Word has length 235 [2022-07-21 05:23:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:08,005 INFO L225 Difference]: With dead ends: 122906 [2022-07-21 05:23:08,005 INFO L226 Difference]: Without dead ends: 105749 [2022-07-21 05:23:08,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259074 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=44537, Invalid=503803, Unknown=0, NotChecked=0, Total=548340 [2022-07-21 05:23:08,078 INFO L413 NwaCegarLoop]: 1349 mSDtfsCounter, 17111 mSDsluCounter, 15782 mSDsCounter, 0 mSdLazyCounter, 24999 mSolverCounterSat, 9102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17111 SdHoareTripleChecker+Valid, 17131 SdHoareTripleChecker+Invalid, 34101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9102 IncrementalHoareTripleChecker+Valid, 24999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17111 Valid, 17131 Invalid, 34101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9102 Valid, 24999 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-21 05:23:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105749 states.