./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.ufo.BOUNDED-10.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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:56:45,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:56:45,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:56:45,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:56:45,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:56:45,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:56:45,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:56:45,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:56:45,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:56:45,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:56:45,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:56:45,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:56:45,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:56:45,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:56:45,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:56:45,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:56:45,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:56:45,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:56:45,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:56:45,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:56:45,808 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:56:45,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:56:45,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:56:45,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:56:45,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:56:45,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:56:45,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:56:45,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:56:45,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:56:45,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:56:45,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:56:45,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:56:45,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:56:45,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:56:45,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:56:45,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:56:45,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:56:45,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:56:45,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:56:45,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:56:45,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:56:45,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:56:45,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:56:45,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:56:45,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:56:45,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:56:45,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:56:45,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:56:45,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:56:45,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:56:45,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:56:45,856 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:56:45,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:56:45,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:56:45,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:56:45,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:56:45,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:56:45,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:56:45,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:56:45,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:56:45,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:56:45,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:56:45,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:56:45,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:56:45,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:56:45,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:56:45,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:56:45,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:56:45,863 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:56:45,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:56:45,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:56:45,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2022-07-22 17:56:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:56:46,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:56:46,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:56:46,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:56:46,104 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:56:46,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-22 17:56:46,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f89e048a/ac787264f14d42418c7703ff1bb87679/FLAGd07a66c83 [2022-07-22 17:56:46,578 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:56:46,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-22 17:56:46,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f89e048a/ac787264f14d42418c7703ff1bb87679/FLAGd07a66c83 [2022-07-22 17:56:46,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f89e048a/ac787264f14d42418c7703ff1bb87679 [2022-07-22 17:56:46,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:56:46,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:56:46,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:56:46,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:56:46,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:56:46,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:46,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1feb3b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46, skipping insertion in model container [2022-07-22 17:56:46,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:46,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:56:46,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:56:46,877 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.ufo.BOUNDED-10.pals.c[14698,14711] [2022-07-22 17:56:46,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:56:46,886 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:56:46,936 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.ufo.BOUNDED-10.pals.c[14698,14711] [2022-07-22 17:56:46,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:56:46,958 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:56:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46 WrapperNode [2022-07-22 17:56:46,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:56:46,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:56:46,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:56:46,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:56:46,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:46,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,020 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 538 [2022-07-22 17:56:47,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:56:47,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:56:47,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:56:47,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:56:47,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:56:47,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:56:47,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:56:47,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:56:47,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (1/1) ... [2022-07-22 17:56:47,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:56:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:56:47,096 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) [2022-07-22 17:56:47,103 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 [2022-07-22 17:56:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-22 17:56:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-22 17:56:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:56:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-22 17:56:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-22 17:56:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-22 17:56:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-22 17:56:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-07-22 17:56:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-07-22 17:56:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 17:56:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 17:56:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:56:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-22 17:56:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-22 17:56:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:56:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:56:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-22 17:56:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-22 17:56:47,223 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:56:47,225 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:56:47,715 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:56:47,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:56:47,726 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:56:47,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:56:47 BoogieIcfgContainer [2022-07-22 17:56:47,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:56:47,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:56:47,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:56:47,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:56:47,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:56:46" (1/3) ... [2022-07-22 17:56:47,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2690e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:56:47, skipping insertion in model container [2022-07-22 17:56:47,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:56:46" (2/3) ... [2022-07-22 17:56:47,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2690e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:56:47, skipping insertion in model container [2022-07-22 17:56:47,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:56:47" (3/3) ... [2022-07-22 17:56:47,736 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-22 17:56:47,750 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:56:47,750 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:56:47,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:56:47,820 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@4ebb4dc9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@252765fd [2022-07-22 17:56:47,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:56:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 17:56:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 17:56:47,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:47,845 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] [2022-07-22 17:56:47,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash -518679476, now seen corresponding path program 1 times [2022-07-22 17:56:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424562291] [2022-07-22 17:56:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:56:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:48,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424562291] [2022-07-22 17:56:48,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424562291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:48,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:48,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 17:56:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578839961] [2022-07-22 17:56:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:48,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:56:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:56:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:56:48,051 INFO L87 Difference]: Start difference. First operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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) [2022-07-22 17:56:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:48,102 INFO L93 Difference]: Finished difference Result 398 states and 642 transitions. [2022-07-22 17:56:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:56:48,104 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 [2022-07-22 17:56:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:48,112 INFO L225 Difference]: With dead ends: 398 [2022-07-22 17:56:48,112 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 17:56:48,116 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 [2022-07-22 17:56:48,119 INFO L413 NwaCegarLoop]: 312 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, 312 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 [2022-07-22 17:56:48,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 17:56:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-22 17:56:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 17:56:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 308 transitions. [2022-07-22 17:56:48,170 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 308 transitions. Word has length 44 [2022-07-22 17:56:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:48,175 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 308 transitions. [2022-07-22 17:56:48,176 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) [2022-07-22 17:56:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 308 transitions. [2022-07-22 17:56:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 17:56:48,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:48,179 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] [2022-07-22 17:56:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:56:48,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -527444980, now seen corresponding path program 1 times [2022-07-22 17:56:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:48,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886448132] [2022-07-22 17:56:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 17:56:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:48,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886448132] [2022-07-22 17:56:48,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886448132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:48,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:48,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:56:48,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354082409] [2022-07-22 17:56:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:48,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:56:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:56:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:56:48,307 INFO L87 Difference]: Start difference. First operand 203 states and 308 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) [2022-07-22 17:56:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:48,419 INFO L93 Difference]: Finished difference Result 531 states and 811 transitions. [2022-07-22 17:56:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:56:48,420 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 [2022-07-22 17:56:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:48,424 INFO L225 Difference]: With dead ends: 531 [2022-07-22 17:56:48,425 INFO L226 Difference]: Without dead ends: 342 [2022-07-22 17:56:48,429 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 [2022-07-22 17:56:48,430 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:48,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1584 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-22 17:56:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 203. [2022-07-22 17:56:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.4268292682926829) internal successors, (234), 164 states have internal predecessors, (234), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 17:56:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 296 transitions. [2022-07-22 17:56:48,453 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 296 transitions. Word has length 44 [2022-07-22 17:56:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:48,454 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 296 transitions. [2022-07-22 17:56:48,454 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) [2022-07-22 17:56:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 296 transitions. [2022-07-22 17:56:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 17:56:48,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:48,456 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] [2022-07-22 17:56:48,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:56:48,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:48,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1202945359, now seen corresponding path program 1 times [2022-07-22 17:56:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:48,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091882866] [2022-07-22 17:56:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091882866] [2022-07-22 17:56:48,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091882866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:48,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:48,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666359189] [2022-07-22 17:56:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:48,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:48,610 INFO L87 Difference]: Start difference. First operand 203 states and 296 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) [2022-07-22 17:56:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:48,664 INFO L93 Difference]: Finished difference Result 393 states and 582 transitions. [2022-07-22 17:56:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:48,665 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 [2022-07-22 17:56:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:48,667 INFO L225 Difference]: With dead ends: 393 [2022-07-22 17:56:48,668 INFO L226 Difference]: Without dead ends: 207 [2022-07-22 17:56:48,669 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 [2022-07-22 17:56:48,677 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 5 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 860 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 [2022-07-22 17:56:48,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 860 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-22 17:56:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-07-22 17:56:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.4191616766467066) internal successors, (237), 167 states have internal predecessors, (237), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 17:56:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2022-07-22 17:56:48,696 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 55 [2022-07-22 17:56:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:48,697 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2022-07-22 17:56:48,697 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) [2022-07-22 17:56:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2022-07-22 17:56:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 17:56:48,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:48,699 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] [2022-07-22 17:56:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:56:48,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash -915994749, now seen corresponding path program 1 times [2022-07-22 17:56:48,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:48,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115016673] [2022-07-22 17:56:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:48,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:56:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:48,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115016673] [2022-07-22 17:56:48,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115016673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:48,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:48,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:56:48,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479808678] [2022-07-22 17:56:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:56:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:56:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:56:48,791 INFO L87 Difference]: Start difference. First operand 207 states and 299 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) [2022-07-22 17:56:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:48,820 INFO L93 Difference]: Finished difference Result 564 states and 826 transitions. [2022-07-22 17:56:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:56:48,821 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 [2022-07-22 17:56:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:48,823 INFO L225 Difference]: With dead ends: 564 [2022-07-22 17:56:48,824 INFO L226 Difference]: Without dead ends: 374 [2022-07-22 17:56:48,824 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 [2022-07-22 17:56:48,825 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 227 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 622 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 [2022-07-22 17:56:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 622 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-22 17:56:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2022-07-22 17:56:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.4390243902439024) internal successors, (413), 288 states have internal predecessors, (413), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-22 17:56:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 533 transitions. [2022-07-22 17:56:48,853 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 533 transitions. Word has length 71 [2022-07-22 17:56:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:48,854 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 533 transitions. [2022-07-22 17:56:48,854 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) [2022-07-22 17:56:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 533 transitions. [2022-07-22 17:56:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:56:48,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:48,857 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] [2022-07-22 17:56:48,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:56:48,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1756914315, now seen corresponding path program 1 times [2022-07-22 17:56:48,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296648529] [2022-07-22 17:56:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:56:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296648529] [2022-07-22 17:56:48,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296648529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:48,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:48,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:56:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048860978] [2022-07-22 17:56:48,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:48,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:56:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:56:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:56:48,924 INFO L87 Difference]: Start difference. First operand 364 states and 533 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2022-07-22 17:56:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:48,967 INFO L93 Difference]: Finished difference Result 1009 states and 1492 transitions. [2022-07-22 17:56:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:56:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 [2022-07-22 17:56:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:48,984 INFO L225 Difference]: With dead ends: 1009 [2022-07-22 17:56:48,985 INFO L226 Difference]: Without dead ends: 662 [2022-07-22 17:56:48,987 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 [2022-07-22 17:56:48,988 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 235 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 657 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 [2022-07-22 17:56:48,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 657 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-07-22 17:56:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 645. [2022-07-22 17:56:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 496 states have (on average 1.4576612903225807) internal successors, (723), 499 states have internal predecessors, (723), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-07-22 17:56:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 957 transitions. [2022-07-22 17:56:49,050 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 957 transitions. Word has length 72 [2022-07-22 17:56:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:49,051 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 957 transitions. [2022-07-22 17:56:49,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2022-07-22 17:56:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 957 transitions. [2022-07-22 17:56:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:56:49,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:49,054 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] [2022-07-22 17:56:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:56:49,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash 477050637, now seen corresponding path program 1 times [2022-07-22 17:56:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353370769] [2022-07-22 17:56:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:56:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:49,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:49,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353370769] [2022-07-22 17:56:49,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353370769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:49,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:49,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:56:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49320131] [2022-07-22 17:56:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:56:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:56:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:49,202 INFO L87 Difference]: Start difference. First operand 645 states and 957 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) [2022-07-22 17:56:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:49,566 INFO L93 Difference]: Finished difference Result 1805 states and 2723 transitions. [2022-07-22 17:56:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:56:49,567 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 [2022-07-22 17:56:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:49,577 INFO L225 Difference]: With dead ends: 1805 [2022-07-22 17:56:49,578 INFO L226 Difference]: Without dead ends: 1177 [2022-07-22 17:56:49,580 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 [2022-07-22 17:56:49,583 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 786 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:49,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 778 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:56:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-22 17:56:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 770. [2022-07-22 17:56:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 608 states have (on average 1.4358552631578947) internal successors, (873), 611 states have internal predecessors, (873), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1121 transitions. [2022-07-22 17:56:49,668 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1121 transitions. Word has length 72 [2022-07-22 17:56:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:49,668 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1121 transitions. [2022-07-22 17:56:49,668 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) [2022-07-22 17:56:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1121 transitions. [2022-07-22 17:56:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 17:56:49,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:49,670 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] [2022-07-22 17:56:49,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:56:49,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -221882142, now seen corresponding path program 1 times [2022-07-22 17:56:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:49,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474004403] [2022-07-22 17:56:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:56:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474004403] [2022-07-22 17:56:49,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474004403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:49,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:49,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:56:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099392894] [2022-07-22 17:56:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:56:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:56:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:49,736 INFO L87 Difference]: Start difference. First operand 770 states and 1121 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) [2022-07-22 17:56:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:50,061 INFO L93 Difference]: Finished difference Result 1809 states and 2723 transitions. [2022-07-22 17:56:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:56:50,062 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 [2022-07-22 17:56:50,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:50,068 INFO L225 Difference]: With dead ends: 1809 [2022-07-22 17:56:50,068 INFO L226 Difference]: Without dead ends: 1181 [2022-07-22 17:56:50,071 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 [2022-07-22 17:56:50,071 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 783 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:50,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 780 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:56:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-22 17:56:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-07-22 17:56:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 619 states have internal predecessors, (881), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1129 transitions. [2022-07-22 17:56:50,143 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1129 transitions. Word has length 73 [2022-07-22 17:56:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:50,143 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1129 transitions. [2022-07-22 17:56:50,144 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) [2022-07-22 17:56:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1129 transitions. [2022-07-22 17:56:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 17:56:50,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:50,145 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] [2022-07-22 17:56:50,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:56:50,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1379275244, now seen corresponding path program 1 times [2022-07-22 17:56:50,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:50,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842512408] [2022-07-22 17:56:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:56:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:50,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:50,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842512408] [2022-07-22 17:56:50,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842512408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:50,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:50,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:50,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176826846] [2022-07-22 17:56:50,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:50,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:50,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:50,254 INFO L87 Difference]: Start difference. First operand 778 states and 1129 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) [2022-07-22 17:56:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:50,578 INFO L93 Difference]: Finished difference Result 1809 states and 2715 transitions. [2022-07-22 17:56:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:50,579 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 [2022-07-22 17:56:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:50,585 INFO L225 Difference]: With dead ends: 1809 [2022-07-22 17:56:50,585 INFO L226 Difference]: Without dead ends: 1181 [2022-07-22 17:56:50,587 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 [2022-07-22 17:56:50,588 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 238 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:50,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 747 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:56:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-22 17:56:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-07-22 17:56:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4237012987012987) internal successors, (877), 619 states have internal predecessors, (877), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1125 transitions. [2022-07-22 17:56:50,660 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1125 transitions. Word has length 75 [2022-07-22 17:56:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:50,661 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1125 transitions. [2022-07-22 17:56:50,661 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) [2022-07-22 17:56:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1125 transitions. [2022-07-22 17:56:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 17:56:50,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:50,662 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] [2022-07-22 17:56:50,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:56:50,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash -156149797, now seen corresponding path program 1 times [2022-07-22 17:56:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:50,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5265248] [2022-07-22 17:56:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5265248] [2022-07-22 17:56:50,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5265248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:50,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:50,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734102074] [2022-07-22 17:56:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:50,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:50,739 INFO L87 Difference]: Start difference. First operand 778 states and 1125 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) [2022-07-22 17:56:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:50,828 INFO L93 Difference]: Finished difference Result 1426 states and 2092 transitions. [2022-07-22 17:56:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:50,828 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 [2022-07-22 17:56:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:50,833 INFO L225 Difference]: With dead ends: 1426 [2022-07-22 17:56:50,833 INFO L226 Difference]: Without dead ends: 798 [2022-07-22 17:56:50,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:50,836 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 6 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 872 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 [2022-07-22 17:56:50,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 872 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-22 17:56:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-07-22 17:56:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 632 states have (on average 1.4129746835443038) internal successors, (893), 635 states have internal predecessors, (893), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1141 transitions. [2022-07-22 17:56:50,940 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1141 transitions. Word has length 76 [2022-07-22 17:56:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:50,941 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1141 transitions. [2022-07-22 17:56:50,941 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) [2022-07-22 17:56:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1141 transitions. [2022-07-22 17:56:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 17:56:50,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:50,946 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] [2022-07-22 17:56:50,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:56:50,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1992242591, now seen corresponding path program 1 times [2022-07-22 17:56:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693866234] [2022-07-22 17:56:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693866234] [2022-07-22 17:56:51,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693866234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:51,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:51,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803220385] [2022-07-22 17:56:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:51,051 INFO L87 Difference]: Start difference. First operand 798 states and 1141 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) [2022-07-22 17:56:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:51,263 INFO L93 Difference]: Finished difference Result 1466 states and 2136 transitions. [2022-07-22 17:56:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:51,264 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 [2022-07-22 17:56:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:51,267 INFO L225 Difference]: With dead ends: 1466 [2022-07-22 17:56:51,268 INFO L226 Difference]: Without dead ends: 818 [2022-07-22 17:56:51,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:51,270 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:51,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-22 17:56:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2022-07-22 17:56:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 648 states have (on average 1.4027777777777777) internal successors, (909), 651 states have internal predecessors, (909), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1157 transitions. [2022-07-22 17:56:51,323 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1157 transitions. Word has length 84 [2022-07-22 17:56:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:51,324 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1157 transitions. [2022-07-22 17:56:51,325 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) [2022-07-22 17:56:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1157 transitions. [2022-07-22 17:56:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 17:56:51,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:51,327 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] [2022-07-22 17:56:51,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:56:51,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash -115565173, now seen corresponding path program 1 times [2022-07-22 17:56:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:51,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558684705] [2022-07-22 17:56:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:51,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558684705] [2022-07-22 17:56:51,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558684705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:51,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:51,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86516900] [2022-07-22 17:56:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:51,434 INFO L87 Difference]: Start difference. First operand 818 states and 1157 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) [2022-07-22 17:56:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:51,505 INFO L93 Difference]: Finished difference Result 1502 states and 2152 transitions. [2022-07-22 17:56:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:51,506 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 [2022-07-22 17:56:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:51,510 INFO L225 Difference]: With dead ends: 1502 [2022-07-22 17:56:51,510 INFO L226 Difference]: Without dead ends: 834 [2022-07-22 17:56:51,512 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 [2022-07-22 17:56:51,513 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 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 [2022-07-22 17:56:51,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-22 17:56:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-07-22 17:56:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3954545454545455) internal successors, (921), 663 states have internal predecessors, (921), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1169 transitions. [2022-07-22 17:56:51,576 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1169 transitions. Word has length 92 [2022-07-22 17:56:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:51,577 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1169 transitions. [2022-07-22 17:56:51,577 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) [2022-07-22 17:56:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1169 transitions. [2022-07-22 17:56:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 17:56:51,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:51,579 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] [2022-07-22 17:56:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:56:51,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2014073166, now seen corresponding path program 1 times [2022-07-22 17:56:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186926293] [2022-07-22 17:56:51,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:51,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:56:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186926293] [2022-07-22 17:56:51,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186926293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:51,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:51,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107484964] [2022-07-22 17:56:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:51,666 INFO L87 Difference]: Start difference. First operand 834 states and 1169 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) [2022-07-22 17:56:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:51,746 INFO L93 Difference]: Finished difference Result 1538 states and 2192 transitions. [2022-07-22 17:56:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:51,747 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 [2022-07-22 17:56:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:51,752 INFO L225 Difference]: With dead ends: 1538 [2022-07-22 17:56:51,752 INFO L226 Difference]: Without dead ends: 854 [2022-07-22 17:56:51,754 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 [2022-07-22 17:56:51,755 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 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 [2022-07-22 17:56:51,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-22 17:56:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-07-22 17:56:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 676 states have (on average 1.386094674556213) internal successors, (937), 679 states have internal predecessors, (937), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1185 transitions. [2022-07-22 17:56:51,828 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1185 transitions. Word has length 92 [2022-07-22 17:56:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:51,829 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1185 transitions. [2022-07-22 17:56:51,829 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) [2022-07-22 17:56:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1185 transitions. [2022-07-22 17:56:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:56:51,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:51,833 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] [2022-07-22 17:56:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:56:51,834 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -794519374, now seen corresponding path program 1 times [2022-07-22 17:56:51,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:51,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865996377] [2022-07-22 17:56:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 17:56:51,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:51,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865996377] [2022-07-22 17:56:51,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865996377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:51,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:51,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918732454] [2022-07-22 17:56:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:51,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:51,935 INFO L87 Difference]: Start difference. First operand 854 states and 1185 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) [2022-07-22 17:56:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:52,014 INFO L93 Difference]: Finished difference Result 1582 states and 2220 transitions. [2022-07-22 17:56:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:52,014 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 [2022-07-22 17:56:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:52,019 INFO L225 Difference]: With dead ends: 1582 [2022-07-22 17:56:52,019 INFO L226 Difference]: Without dead ends: 878 [2022-07-22 17:56:52,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:56:52,022 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 7 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 869 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 [2022-07-22 17:56:52,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 869 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-07-22 17:56:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-07-22 17:56:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 696 states have (on average 1.375) internal successors, (957), 699 states have internal predecessors, (957), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-22 17:56:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1205 transitions. [2022-07-22 17:56:52,077 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1205 transitions. Word has length 100 [2022-07-22 17:56:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:52,078 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1205 transitions. [2022-07-22 17:56:52,078 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) [2022-07-22 17:56:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1205 transitions. [2022-07-22 17:56:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:56:52,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:52,080 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] [2022-07-22 17:56:52,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:56:52,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1401758325, now seen corresponding path program 1 times [2022-07-22 17:56:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976409329] [2022-07-22 17:56:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:56:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:56:52,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:52,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976409329] [2022-07-22 17:56:52,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976409329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:52,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:52,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850988723] [2022-07-22 17:56:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:52,248 INFO L87 Difference]: Start difference. First operand 878 states and 1205 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) [2022-07-22 17:56:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:52,545 INFO L93 Difference]: Finished difference Result 2499 states and 3487 transitions. [2022-07-22 17:56:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:56:52,546 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 [2022-07-22 17:56:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:52,555 INFO L225 Difference]: With dead ends: 2499 [2022-07-22 17:56:52,556 INFO L226 Difference]: Without dead ends: 1771 [2022-07-22 17:56:52,558 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 [2022-07-22 17:56:52,559 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 395 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2312 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-07-22 17:56:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1162. [2022-07-22 17:56:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 907 states have (on average 1.3660418963616316) internal successors, (1239), 912 states have internal predecessors, (1239), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-22 17:56:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1583 transitions. [2022-07-22 17:56:52,681 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1583 transitions. Word has length 103 [2022-07-22 17:56:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:52,681 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1583 transitions. [2022-07-22 17:56:52,681 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) [2022-07-22 17:56:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1583 transitions. [2022-07-22 17:56:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:56:52,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:52,683 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] [2022-07-22 17:56:52,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:56:52,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1324741963, now seen corresponding path program 1 times [2022-07-22 17:56:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040937034] [2022-07-22 17:56:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:56:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 17:56:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040937034] [2022-07-22 17:56:52,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040937034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:52,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:52,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284476774] [2022-07-22 17:56:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:52,757 INFO L87 Difference]: Start difference. First operand 1162 states and 1583 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) [2022-07-22 17:56:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:52,844 INFO L93 Difference]: Finished difference Result 2130 states and 2928 transitions. [2022-07-22 17:56:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:56:52,845 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 [2022-07-22 17:56:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:52,850 INFO L225 Difference]: With dead ends: 2130 [2022-07-22 17:56:52,851 INFO L226 Difference]: Without dead ends: 1186 [2022-07-22 17:56:52,853 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 [2022-07-22 17:56:52,854 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 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 [2022-07-22 17:56:52,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-07-22 17:56:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-07-22 17:56:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 925 states have (on average 1.358918918918919) internal successors, (1257), 930 states have internal predecessors, (1257), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-22 17:56:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1601 transitions. [2022-07-22 17:56:52,933 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1601 transitions. Word has length 107 [2022-07-22 17:56:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1601 transitions. [2022-07-22 17:56:52,933 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) [2022-07-22 17:56:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1601 transitions. [2022-07-22 17:56:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:56:52,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:52,951 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] [2022-07-22 17:56:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:56:52,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 682815691, now seen corresponding path program 1 times [2022-07-22 17:56:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:52,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214519401] [2022-07-22 17:56:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:56:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:56:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:53,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214519401] [2022-07-22 17:56:53,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214519401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:53,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:53,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:56:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506862144] [2022-07-22 17:56:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:56:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:56:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:56:53,036 INFO L87 Difference]: Start difference. First operand 1186 states and 1601 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) [2022-07-22 17:56:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:53,203 INFO L93 Difference]: Finished difference Result 1659 states and 2347 transitions. [2022-07-22 17:56:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:56:53,204 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 [2022-07-22 17:56:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:53,212 INFO L225 Difference]: With dead ends: 1659 [2022-07-22 17:56:53,212 INFO L226 Difference]: Without dead ends: 1657 [2022-07-22 17:56:53,213 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 [2022-07-22 17:56:53,214 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 263 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2259 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:56:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-07-22 17:56:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1194. [2022-07-22 17:56:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 929 states have (on average 1.3573735199138859) internal successors, (1261), 936 states have internal predecessors, (1261), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-07-22 17:56:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1609 transitions. [2022-07-22 17:56:53,327 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1609 transitions. Word has length 106 [2022-07-22 17:56:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:53,328 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1609 transitions. [2022-07-22 17:56:53,328 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) [2022-07-22 17:56:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1609 transitions. [2022-07-22 17:56:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:56:53,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:53,330 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] [2022-07-22 17:56:53,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:56:53,330 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -614162587, now seen corresponding path program 1 times [2022-07-22 17:56:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:53,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310497782] [2022-07-22 17:56:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:56:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:56:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:53,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310497782] [2022-07-22 17:56:53,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310497782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:53,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:53,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789926975] [2022-07-22 17:56:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:53,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:53,415 INFO L87 Difference]: Start difference. First operand 1194 states and 1609 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) [2022-07-22 17:56:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:53,647 INFO L93 Difference]: Finished difference Result 2456 states and 3370 transitions. [2022-07-22 17:56:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:56:53,647 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 [2022-07-22 17:56:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:53,655 INFO L225 Difference]: With dead ends: 2456 [2022-07-22 17:56:53,655 INFO L226 Difference]: Without dead ends: 1562 [2022-07-22 17:56:53,658 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 [2022-07-22 17:56:53,658 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 527 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:53,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 2275 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-22 17:56:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1240. [2022-07-22 17:56:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 986 states have (on average 1.3468559837728196) internal successors, (1328), 998 states have internal predecessors, (1328), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-07-22 17:56:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1652 transitions. [2022-07-22 17:56:53,782 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1652 transitions. Word has length 109 [2022-07-22 17:56:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:53,782 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1652 transitions. [2022-07-22 17:56:53,783 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) [2022-07-22 17:56:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1652 transitions. [2022-07-22 17:56:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:56:53,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:53,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:53,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:56:53,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash 326540891, now seen corresponding path program 1 times [2022-07-22 17:56:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428875868] [2022-07-22 17:56:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:56:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:56:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:56:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428875868] [2022-07-22 17:56:53,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428875868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:53,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:53,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279063263] [2022-07-22 17:56:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:53,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:53,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:53,895 INFO L87 Difference]: Start difference. First operand 1240 states and 1652 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) [2022-07-22 17:56:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:54,168 INFO L93 Difference]: Finished difference Result 2550 states and 3481 transitions. [2022-07-22 17:56:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:56:54,169 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 [2022-07-22 17:56:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:54,176 INFO L225 Difference]: With dead ends: 2550 [2022-07-22 17:56:54,176 INFO L226 Difference]: Without dead ends: 1590 [2022-07-22 17:56:54,179 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 [2022-07-22 17:56:54,179 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 399 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:54,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2425 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-07-22 17:56:54,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1126. [2022-07-22 17:56:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 899 states have (on average 1.3481646273637375) internal successors, (1212), 909 states have internal predecessors, (1212), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-07-22 17:56:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1502 transitions. [2022-07-22 17:56:54,299 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1502 transitions. Word has length 111 [2022-07-22 17:56:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:54,300 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1502 transitions. [2022-07-22 17:56:54,300 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) [2022-07-22 17:56:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1502 transitions. [2022-07-22 17:56:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:56:54,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:54,302 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] [2022-07-22 17:56:54,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:56:54,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2059853897, now seen corresponding path program 1 times [2022-07-22 17:56:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669656556] [2022-07-22 17:56:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:56:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:56:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:56:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 17:56:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:54,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669656556] [2022-07-22 17:56:54,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669656556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:54,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:54,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:56:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766444368] [2022-07-22 17:56:54,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:54,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:56:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:56:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:56:54,447 INFO L87 Difference]: Start difference. First operand 1126 states and 1502 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) [2022-07-22 17:56:55,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:55,085 INFO L93 Difference]: Finished difference Result 2621 states and 3588 transitions. [2022-07-22 17:56:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:56:55,085 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 [2022-07-22 17:56:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:55,093 INFO L225 Difference]: With dead ends: 2621 [2022-07-22 17:56:55,093 INFO L226 Difference]: Without dead ends: 1695 [2022-07-22 17:56:55,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:56:55,096 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 930 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:55,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2165 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:56:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-07-22 17:56:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1142. [2022-07-22 17:56:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 907 states have (on average 1.328555678059537) internal successors, (1205), 918 states have internal predecessors, (1205), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-07-22 17:56:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1501 transitions. [2022-07-22 17:56:55,208 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1501 transitions. Word has length 112 [2022-07-22 17:56:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:55,208 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1501 transitions. [2022-07-22 17:56:55,208 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) [2022-07-22 17:56:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1501 transitions. [2022-07-22 17:56:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:56:55,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:55,210 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] [2022-07-22 17:56:55,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:56:55,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1941201166, now seen corresponding path program 1 times [2022-07-22 17:56:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:55,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760424776] [2022-07-22 17:56:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:56:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:56:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:56:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:56:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:55,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760424776] [2022-07-22 17:56:55,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760424776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:55,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:55,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995385616] [2022-07-22 17:56:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:55,286 INFO L87 Difference]: Start difference. First operand 1142 states and 1501 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) [2022-07-22 17:56:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:55,607 INFO L93 Difference]: Finished difference Result 3187 states and 4275 transitions. [2022-07-22 17:56:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:55,607 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 [2022-07-22 17:56:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:55,617 INFO L225 Difference]: With dead ends: 3187 [2022-07-22 17:56:55,618 INFO L226 Difference]: Without dead ends: 2296 [2022-07-22 17:56:55,620 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 [2022-07-22 17:56:55,621 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 440 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:55,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1227 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-07-22 17:56:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1939. [2022-07-22 17:56:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1514 states have (on average 1.3262879788639366) internal successors, (2008), 1533 states have internal predecessors, (2008), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-07-22 17:56:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2552 transitions. [2022-07-22 17:56:55,809 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2552 transitions. Word has length 112 [2022-07-22 17:56:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:55,810 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 2552 transitions. [2022-07-22 17:56:55,810 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) [2022-07-22 17:56:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2552 transitions. [2022-07-22 17:56:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:56:55,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:55,812 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] [2022-07-22 17:56:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:56:55,812 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2103041469, now seen corresponding path program 1 times [2022-07-22 17:56:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:55,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516338081] [2022-07-22 17:56:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:56:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:56:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:56:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:56:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:56:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:56:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:56:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 17:56:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:55,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516338081] [2022-07-22 17:56:55,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516338081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:55,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:55,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670336220] [2022-07-22 17:56:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:55,917 INFO L87 Difference]: Start difference. First operand 1939 states and 2552 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) [2022-07-22 17:56:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:56,666 INFO L93 Difference]: Finished difference Result 4400 states and 5932 transitions. [2022-07-22 17:56:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:56:56,666 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 [2022-07-22 17:56:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:56,677 INFO L225 Difference]: With dead ends: 4400 [2022-07-22 17:56:56,678 INFO L226 Difference]: Without dead ends: 2810 [2022-07-22 17:56:56,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:56:56,682 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 806 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:56,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2518 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:56:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-07-22 17:56:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1958. [2022-07-22 17:56:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1520 states have (on average 1.3223684210526316) internal successors, (2010), 1540 states have internal predecessors, (2010), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-07-22 17:56:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2570 transitions. [2022-07-22 17:56:56,933 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2570 transitions. Word has length 114 [2022-07-22 17:56:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:56,933 INFO L495 AbstractCegarLoop]: Abstraction has 1958 states and 2570 transitions. [2022-07-22 17:56:56,934 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) [2022-07-22 17:56:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2570 transitions. [2022-07-22 17:56:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:56:56,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:56,936 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] [2022-07-22 17:56:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:56:56,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 985009634, now seen corresponding path program 1 times [2022-07-22 17:56:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:56,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58848660] [2022-07-22 17:56:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:56,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:56:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:56:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:56:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:56:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:56:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:56:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:56:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:56:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:57,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58848660] [2022-07-22 17:56:57,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58848660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:57,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:57,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:57,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346015694] [2022-07-22 17:56:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:57,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:57,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:57,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:57,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:57,024 INFO L87 Difference]: Start difference. First operand 1958 states and 2570 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) [2022-07-22 17:56:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:57,471 INFO L93 Difference]: Finished difference Result 5168 states and 6863 transitions. [2022-07-22 17:56:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:57,472 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 [2022-07-22 17:56:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:57,501 INFO L225 Difference]: With dead ends: 5168 [2022-07-22 17:56:57,501 INFO L226 Difference]: Without dead ends: 3594 [2022-07-22 17:56:57,506 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 [2022-07-22 17:56:57,507 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 487 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:57,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1291 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-07-22 17:56:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3019. [2022-07-22 17:56:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2306 states have (on average 1.318733738074588) internal successors, (3041), 2337 states have internal predecessors, (3041), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-07-22 17:56:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3961 transitions. [2022-07-22 17:56:57,808 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3961 transitions. Word has length 115 [2022-07-22 17:56:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:57,809 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3961 transitions. [2022-07-22 17:56:57,809 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) [2022-07-22 17:56:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3961 transitions. [2022-07-22 17:56:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:56:57,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:57,812 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] [2022-07-22 17:56:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:56:57,813 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1237817774, now seen corresponding path program 1 times [2022-07-22 17:56:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:57,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742372242] [2022-07-22 17:56:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:56:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:56:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:56:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:56:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:56:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:56:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:56:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:56:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:57,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742372242] [2022-07-22 17:56:57,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742372242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:57,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:57,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:56:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923637928] [2022-07-22 17:56:57,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:57,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:56:57,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:56:57,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:56:57,879 INFO L87 Difference]: Start difference. First operand 3019 states and 3961 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) [2022-07-22 17:56:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:58,469 INFO L93 Difference]: Finished difference Result 7140 states and 9437 transitions. [2022-07-22 17:56:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:56:58,469 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 [2022-07-22 17:56:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:58,487 INFO L225 Difference]: With dead ends: 7140 [2022-07-22 17:56:58,488 INFO L226 Difference]: Without dead ends: 4635 [2022-07-22 17:56:58,495 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 [2022-07-22 17:56:58,496 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 434 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:58,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1288 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2022-07-22 17:56:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4297. [2022-07-22 17:56:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3260 states have (on average 1.316564417177914) internal successors, (4292), 3304 states have internal predecessors, (4292), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-07-22 17:56:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5636 transitions. [2022-07-22 17:56:58,926 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5636 transitions. Word has length 115 [2022-07-22 17:56:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 5636 transitions. [2022-07-22 17:56:58,927 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) [2022-07-22 17:56:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5636 transitions. [2022-07-22 17:56:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:56:58,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:58,930 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] [2022-07-22 17:56:58,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:56:58,930 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1950956728, now seen corresponding path program 1 times [2022-07-22 17:56:58,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:58,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014965906] [2022-07-22 17:56:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:56:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:56:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:56:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:56:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:56:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:56:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:56:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:56:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:56:58,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014965906] [2022-07-22 17:56:58,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014965906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:58,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:58,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:56:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027308166] [2022-07-22 17:56:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:56:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:56:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:56:58,978 INFO L87 Difference]: Start difference. First operand 4297 states and 5636 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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) [2022-07-22 17:56:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:59,673 INFO L93 Difference]: Finished difference Result 9720 states and 13194 transitions. [2022-07-22 17:56:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:56:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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 [2022-07-22 17:56:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:59,691 INFO L225 Difference]: With dead ends: 9720 [2022-07-22 17:56:59,691 INFO L226 Difference]: Without dead ends: 5828 [2022-07-22 17:56:59,699 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 [2022-07-22 17:56:59,701 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 152 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:59,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 704 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:56:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2022-07-22 17:57:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 4303. [2022-07-22 17:57:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 3266 states have (on average 1.3159828536436007) internal successors, (4298), 3310 states have internal predecessors, (4298), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-07-22 17:57:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 5642 transitions. [2022-07-22 17:57:00,194 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 5642 transitions. Word has length 116 [2022-07-22 17:57:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:00,195 INFO L495 AbstractCegarLoop]: Abstraction has 4303 states and 5642 transitions. [2022-07-22 17:57:00,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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) [2022-07-22 17:57:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 5642 transitions. [2022-07-22 17:57:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:57:00,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:00,198 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] [2022-07-22 17:57:00,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 17:57:00,198 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2025473139, now seen corresponding path program 1 times [2022-07-22 17:57:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:00,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126551772] [2022-07-22 17:57:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:57:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:57:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:57:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:57:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:57:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:57:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:57:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:57:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126551772] [2022-07-22 17:57:00,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126551772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:00,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:00,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851460987] [2022-07-22 17:57:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:00,293 INFO L87 Difference]: Start difference. First operand 4303 states and 5642 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-07-22 17:57:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:00,889 INFO L93 Difference]: Finished difference Result 9016 states and 12080 transitions. [2022-07-22 17:57:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:00,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 117 [2022-07-22 17:57:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:00,905 INFO L225 Difference]: With dead ends: 9016 [2022-07-22 17:57:00,906 INFO L226 Difference]: Without dead ends: 4810 [2022-07-22 17:57:00,917 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 [2022-07-22 17:57:00,917 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 370 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:00,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 884 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2022-07-22 17:57:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3870. [2022-07-22 17:57:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2916 states have (on average 1.3223593964334706) internal successors, (3856), 2950 states have internal predecessors, (3856), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-07-22 17:57:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5096 transitions. [2022-07-22 17:57:01,261 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5096 transitions. Word has length 117 [2022-07-22 17:57:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 3870 states and 5096 transitions. [2022-07-22 17:57:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2022-07-22 17:57:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5096 transitions. [2022-07-22 17:57:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 17:57:01,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:01,263 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] [2022-07-22 17:57:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:57:01,264 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash 183157843, now seen corresponding path program 1 times [2022-07-22 17:57:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:01,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142811909] [2022-07-22 17:57:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:57:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:57:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:57:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:57:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:57:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:57:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:57:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:57:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:01,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142811909] [2022-07-22 17:57:01,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142811909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:01,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:01,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:57:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161619042] [2022-07-22 17:57:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:01,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:57:01,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:57:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:57:01,321 INFO L87 Difference]: Start difference. First operand 3870 states and 5096 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) [2022-07-22 17:57:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:01,895 INFO L93 Difference]: Finished difference Result 8518 states and 11512 transitions. [2022-07-22 17:57:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:57:01,896 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 [2022-07-22 17:57:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:01,911 INFO L225 Difference]: With dead ends: 8518 [2022-07-22 17:57:01,911 INFO L226 Difference]: Without dead ends: 4861 [2022-07-22 17:57:01,919 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 [2022-07-22 17:57:01,920 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 152 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 681 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 [2022-07-22 17:57:01,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 681 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:57:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2022-07-22 17:57:02,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3880. [2022-07-22 17:57:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2926 states have (on average 1.3212576896787422) internal successors, (3866), 2960 states have internal predecessors, (3866), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-07-22 17:57:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5106 transitions. [2022-07-22 17:57:02,325 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5106 transitions. Word has length 118 [2022-07-22 17:57:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:02,325 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 5106 transitions. [2022-07-22 17:57:02,325 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) [2022-07-22 17:57:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5106 transitions. [2022-07-22 17:57:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 17:57:02,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:02,330 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] [2022-07-22 17:57:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 17:57:02,330 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:02,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1515793806, now seen corresponding path program 1 times [2022-07-22 17:57:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:02,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727997691] [2022-07-22 17:57:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:02,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:57:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:57:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:57:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:57:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:57:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:57:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:57:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:57:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:02,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727997691] [2022-07-22 17:57:02,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727997691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:02,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:02,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287550694] [2022-07-22 17:57:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:02,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:02,404 INFO L87 Difference]: Start difference. First operand 3880 states and 5106 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) [2022-07-22 17:57:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:02,899 INFO L93 Difference]: Finished difference Result 8465 states and 11428 transitions. [2022-07-22 17:57:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:02,899 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 [2022-07-22 17:57:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:02,915 INFO L225 Difference]: With dead ends: 8465 [2022-07-22 17:57:02,915 INFO L226 Difference]: Without dead ends: 4731 [2022-07-22 17:57:02,923 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 [2022-07-22 17:57:02,923 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 285 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 915 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 [2022-07-22 17:57:02,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 915 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2022-07-22 17:57:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 2927. [2022-07-22 17:57:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2207 states have (on average 1.313094698685999) internal successors, (2898), 2226 states have internal predecessors, (2898), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-07-22 17:57:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3836 transitions. [2022-07-22 17:57:03,320 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3836 transitions. Word has length 118 [2022-07-22 17:57:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:03,321 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 3836 transitions. [2022-07-22 17:57:03,321 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) [2022-07-22 17:57:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3836 transitions. [2022-07-22 17:57:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-22 17:57:03,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:03,328 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, 1] [2022-07-22 17:57:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 17:57:03,328 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash -402462666, now seen corresponding path program 1 times [2022-07-22 17:57:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:03,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603249170] [2022-07-22 17:57:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:57:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:57:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:57:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:57:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:57:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:57:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:57:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:57:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 17:57:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:57:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 17:57:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 17:57:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:57:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 17:57:03,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:03,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603249170] [2022-07-22 17:57:03,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603249170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:03,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066307822] [2022-07-22 17:57:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:03,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:03,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:03,499 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) [2022-07-22 17:57:03,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:57:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:03,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:57:03,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:57:03,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 17:57:04,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066307822] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:04,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:04,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-22 17:57:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432658933] [2022-07-22 17:57:04,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:04,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:57:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:57:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:57:04,119 INFO L87 Difference]: Start difference. First operand 2927 states and 3836 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 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) [2022-07-22 17:57:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:07,772 INFO L93 Difference]: Finished difference Result 10002 states and 14000 transitions. [2022-07-22 17:57:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 17:57:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 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 186 [2022-07-22 17:57:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:07,792 INFO L225 Difference]: With dead ends: 10002 [2022-07-22 17:57:07,792 INFO L226 Difference]: Without dead ends: 7362 [2022-07-22 17:57:07,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-22 17:57:07,800 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 4481 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4481 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:07,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4481 Valid, 3286 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 17:57:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2022-07-22 17:57:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 3451. [2022-07-22 17:57:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2624 states have (on average 1.3090701219512195) internal successors, (3435), 2644 states have internal predecessors, (3435), 531 states have call successors, (531), 295 states have call predecessors, (531), 295 states have return successors, (531), 511 states have call predecessors, (531), 531 states have call successors, (531) [2022-07-22 17:57:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4497 transitions. [2022-07-22 17:57:08,286 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4497 transitions. Word has length 186 [2022-07-22 17:57:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:08,286 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 4497 transitions. [2022-07-22 17:57:08,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 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) [2022-07-22 17:57:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4497 transitions. [2022-07-22 17:57:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-22 17:57:08,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:08,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:08,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:08,507 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 [2022-07-22 17:57:08,507 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash 141381451, now seen corresponding path program 1 times [2022-07-22 17:57:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270169071] [2022-07-22 17:57:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:57:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:57:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:57:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:57:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:57:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:57:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:57:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 17:57:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 17:57:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 17:57:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 17:57:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:57:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 17:57:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-22 17:57:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:08,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270169071] [2022-07-22 17:57:08,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270169071] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:08,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782558294] [2022-07-22 17:57:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:08,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:08,690 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) [2022-07-22 17:57:08,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:57:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:08,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:57:08,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 17:57:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 17:57:09,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782558294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:09,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:09,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-22 17:57:09,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859057397] [2022-07-22 17:57:09,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:09,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 17:57:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:09,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 17:57:09,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:57:09,361 INFO L87 Difference]: Start difference. First operand 3451 states and 4497 transitions. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-22 17:57:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:17,138 INFO L93 Difference]: Finished difference Result 17532 states and 23957 transitions. [2022-07-22 17:57:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-07-22 17:57:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 194 [2022-07-22 17:57:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:17,172 INFO L225 Difference]: With dead ends: 17532 [2022-07-22 17:57:17,172 INFO L226 Difference]: Without dead ends: 14377 [2022-07-22 17:57:17,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-07-22 17:57:17,184 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 5889 mSDsluCounter, 13834 mSDsCounter, 0 mSdLazyCounter, 5456 mSolverCounterSat, 3535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 15666 SdHoareTripleChecker+Invalid, 8991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3535 IncrementalHoareTripleChecker+Valid, 5456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:17,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5889 Valid, 15666 Invalid, 8991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3535 Valid, 5456 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-22 17:57:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2022-07-22 17:57:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 6318. [2022-07-22 17:57:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 4774 states have (on average 1.3112693757855047) internal successors, (6260), 4812 states have internal predecessors, (6260), 992 states have call successors, (992), 551 states have call predecessors, (992), 551 states have return successors, (992), 954 states have call predecessors, (992), 992 states have call successors, (992) [2022-07-22 17:57:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8244 transitions. [2022-07-22 17:57:18,015 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8244 transitions. Word has length 194 [2022-07-22 17:57:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:18,016 INFO L495 AbstractCegarLoop]: Abstraction has 6318 states and 8244 transitions. [2022-07-22 17:57:18,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-22 17:57:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8244 transitions. [2022-07-22 17:57:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 17:57:18,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:18,027 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] [2022-07-22 17:57:18,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:18,251 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 [2022-07-22 17:57:18,252 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1389154626, now seen corresponding path program 1 times [2022-07-22 17:57:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85898695] [2022-07-22 17:57:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:57:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 17:57:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 17:57:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:57:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 17:57:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 17:57:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-22 17:57:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 17:57:18,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:18,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85898695] [2022-07-22 17:57:18,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85898695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:18,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:18,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:57:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294790926] [2022-07-22 17:57:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:18,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:57:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:57:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:57:18,355 INFO L87 Difference]: Start difference. First operand 6318 states and 8244 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 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) [2022-07-22 17:57:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:20,568 INFO L93 Difference]: Finished difference Result 21338 states and 28586 transitions. [2022-07-22 17:57:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:57:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 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 196 [2022-07-22 17:57:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:20,613 INFO L225 Difference]: With dead ends: 21338 [2022-07-22 17:57:20,614 INFO L226 Difference]: Without dead ends: 15378 [2022-07-22 17:57:20,628 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 [2022-07-22 17:57:20,628 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 817 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:20,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 3094 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:57:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2022-07-22 17:57:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 8160. [2022-07-22 17:57:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 6104 states have (on average 1.3086500655307995) internal successors, (7988), 6155 states have internal predecessors, (7988), 1335 states have call successors, (1335), 720 states have call predecessors, (1335), 720 states have return successors, (1335), 1284 states have call predecessors, (1335), 1335 states have call successors, (1335) [2022-07-22 17:57:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 10658 transitions. [2022-07-22 17:57:21,708 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 10658 transitions. Word has length 196 [2022-07-22 17:57:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:21,709 INFO L495 AbstractCegarLoop]: Abstraction has 8160 states and 10658 transitions. [2022-07-22 17:57:21,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 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) [2022-07-22 17:57:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 10658 transitions. [2022-07-22 17:57:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-22 17:57:21,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:21,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:21,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 17:57:21,723 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1333769863, now seen corresponding path program 1 times [2022-07-22 17:57:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852714213] [2022-07-22 17:57:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:57:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 17:57:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:57:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 17:57:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 17:57:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 17:57:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 17:57:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 17:57:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852714213] [2022-07-22 17:57:21,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852714213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:21,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142508596] [2022-07-22 17:57:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:21,863 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) [2022-07-22 17:57:21,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:57:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:22,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 17:57:22,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 17:57:22,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 17:57:22,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142508596] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:22,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:57:22,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-07-22 17:57:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683430334] [2022-07-22 17:57:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:57:22,210 INFO L87 Difference]: Start difference. First operand 8160 states and 10658 transitions. Second operand has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:57:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:22,779 INFO L93 Difference]: Finished difference Result 13442 states and 17611 transitions. [2022-07-22 17:57:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 198 [2022-07-22 17:57:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:22,798 INFO L225 Difference]: With dead ends: 13442 [2022-07-22 17:57:22,798 INFO L226 Difference]: Without dead ends: 5488 [2022-07-22 17:57:22,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:57:22,864 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:22,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 870 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:57:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2022-07-22 17:57:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5488. [2022-07-22 17:57:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4106 states have (on average 1.3080857282026304) internal successors, (5371), 4140 states have internal predecessors, (5371), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-07-22 17:57:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7173 transitions. [2022-07-22 17:57:23,492 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7173 transitions. Word has length 198 [2022-07-22 17:57:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:23,493 INFO L495 AbstractCegarLoop]: Abstraction has 5488 states and 7173 transitions. [2022-07-22 17:57:23,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:57:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7173 transitions. [2022-07-22 17:57:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-22 17:57:23,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:23,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:57:23,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:23,727 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 [2022-07-22 17:57:23,728 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1056461284, now seen corresponding path program 1 times [2022-07-22 17:57:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:23,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585333851] [2022-07-22 17:57:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:23,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:57:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:57:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 17:57:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 17:57:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 17:57:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 17:57:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 17:57:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585333851] [2022-07-22 17:57:23,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585333851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24519186] [2022-07-22 17:57:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:23,922 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) [2022-07-22 17:57:23,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:57:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:24,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:57:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 17:57:24,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 17:57:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24519186] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:24,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-07-22 17:57:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406164150] [2022-07-22 17:57:24,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 17:57:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 17:57:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:57:24,852 INFO L87 Difference]: Start difference. First operand 5488 states and 7173 transitions. Second operand has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-22 17:57:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:39,352 INFO L93 Difference]: Finished difference Result 27311 states and 38275 transitions. [2022-07-22 17:57:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-07-22 17:57:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 198 [2022-07-22 17:57:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:39,417 INFO L225 Difference]: With dead ends: 27311 [2022-07-22 17:57:39,417 INFO L226 Difference]: Without dead ends: 22107 [2022-07-22 17:57:39,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20333 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5256, Invalid=44696, Unknown=0, NotChecked=0, Total=49952 [2022-07-22 17:57:39,445 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 10125 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 12316 mSolverCounterSat, 4950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10125 SdHoareTripleChecker+Valid, 8829 SdHoareTripleChecker+Invalid, 17266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4950 IncrementalHoareTripleChecker+Valid, 12316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:39,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10125 Valid, 8829 Invalid, 17266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4950 Valid, 12316 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-22 17:57:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2022-07-22 17:57:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 11273. [2022-07-22 17:57:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 8504 states have (on average 1.3065616180620885) internal successors, (11111), 8570 states have internal predecessors, (11111), 1785 states have call successors, (1785), 983 states have call predecessors, (1785), 983 states have return successors, (1785), 1719 states have call predecessors, (1785), 1785 states have call successors, (1785) [2022-07-22 17:57:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 14681 transitions. [2022-07-22 17:57:41,171 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 14681 transitions. Word has length 198 [2022-07-22 17:57:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:41,172 INFO L495 AbstractCegarLoop]: Abstraction has 11273 states and 14681 transitions. [2022-07-22 17:57:41,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-22 17:57:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 14681 transitions. [2022-07-22 17:57:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-22 17:57:41,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:41,197 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, 1] [2022-07-22 17:57:41,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:41,411 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 [2022-07-22 17:57:41,411 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash 988856049, now seen corresponding path program 1 times [2022-07-22 17:57:41,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:41,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868556174] [2022-07-22 17:57:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:41,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:57:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:57:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 17:57:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 17:57:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 17:57:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 17:57:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 17:57:41,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868556174] [2022-07-22 17:57:41,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868556174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:41,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:41,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:57:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182599819] [2022-07-22 17:57:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:41,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:57:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:57:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:41,555 INFO L87 Difference]: Start difference. First operand 11273 states and 14681 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:57:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:42,776 INFO L93 Difference]: Finished difference Result 21529 states and 28129 transitions. [2022-07-22 17:57:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:57:42,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 198 [2022-07-22 17:57:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:42,799 INFO L225 Difference]: With dead ends: 21529 [2022-07-22 17:57:42,799 INFO L226 Difference]: Without dead ends: 10523 [2022-07-22 17:57:42,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:57:42,814 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 287 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:42,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 442 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:57:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10523 states. [2022-07-22 17:57:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10523 to 10523. [2022-07-22 17:57:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10523 states, 7946 states have (on average 1.30845708532595) internal successors, (10397), 8008 states have internal predecessors, (10397), 1663 states have call successors, (1663), 913 states have call predecessors, (1663), 913 states have return successors, (1663), 1601 states have call predecessors, (1663), 1663 states have call successors, (1663) [2022-07-22 17:57:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10523 states to 10523 states and 13723 transitions. [2022-07-22 17:57:44,039 INFO L78 Accepts]: Start accepts. Automaton has 10523 states and 13723 transitions. Word has length 198 [2022-07-22 17:57:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:44,040 INFO L495 AbstractCegarLoop]: Abstraction has 10523 states and 13723 transitions. [2022-07-22 17:57:44,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:57:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10523 states and 13723 transitions. [2022-07-22 17:57:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-22 17:57:44,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:44,101 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, 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] [2022-07-22 17:57:44,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 17:57:44,101 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2041661109, now seen corresponding path program 1 times [2022-07-22 17:57:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:44,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226462815] [2022-07-22 17:57:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:57:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:57:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 17:57:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 17:57:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 17:57:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 17:57:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-22 17:57:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 17:57:44,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226462815] [2022-07-22 17:57:44,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226462815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255455506] [2022-07-22 17:57:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:44,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:44,284 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) [2022-07-22 17:57:44,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:57:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 17:57:44,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 17:57:44,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 17:57:44,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255455506] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:44,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:44,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-22 17:57:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10824857] [2022-07-22 17:57:44,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:44,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 17:57:44,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 17:57:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:57:44,715 INFO L87 Difference]: Start difference. First operand 10523 states and 13723 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 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) [2022-07-22 17:57:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:51,467 INFO L93 Difference]: Finished difference Result 32522 states and 44939 transitions. [2022-07-22 17:57:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-22 17:57:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 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 199 [2022-07-22 17:57:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:51,514 INFO L225 Difference]: With dead ends: 32522 [2022-07-22 17:57:51,514 INFO L226 Difference]: Without dead ends: 22305 [2022-07-22 17:57:51,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=886, Invalid=5594, Unknown=0, NotChecked=0, Total=6480 [2022-07-22 17:57:51,533 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 3052 mSDsluCounter, 6315 mSDsCounter, 0 mSdLazyCounter, 5308 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 6959 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 5308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:51,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 6959 Invalid, 6784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1476 Valid, 5308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:57:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2022-07-22 17:57:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 11869. [2022-07-22 17:57:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11869 states, 8972 states have (on average 1.3039456085599643) internal successors, (11699), 9042 states have internal predecessors, (11699), 1863 states have call successors, (1863), 1033 states have call predecessors, (1863), 1033 states have return successors, (1863), 1793 states have call predecessors, (1863), 1863 states have call successors, (1863) [2022-07-22 17:57:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11869 states to 11869 states and 15425 transitions. [2022-07-22 17:57:53,277 INFO L78 Accepts]: Start accepts. Automaton has 11869 states and 15425 transitions. Word has length 199 [2022-07-22 17:57:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:53,277 INFO L495 AbstractCegarLoop]: Abstraction has 11869 states and 15425 transitions. [2022-07-22 17:57:53,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 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) [2022-07-22 17:57:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11869 states and 15425 transitions. [2022-07-22 17:57:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-22 17:57:53,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:53,293 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, 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] [2022-07-22 17:57:53,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:57:53,517 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,SelfDestructingSolverStorable33 [2022-07-22 17:57:53,517 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1117795559, now seen corresponding path program 1 times [2022-07-22 17:57:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178310874] [2022-07-22 17:57:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:53,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:57:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:57:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:57:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:57:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:57:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:57:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:57:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:57:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 17:57:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 17:57:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 17:57:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 17:57:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-22 17:57:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-22 17:57:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 17:57:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178310874] [2022-07-22 17:57:53,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178310874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:57:53,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:57:53,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:57:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107490764] [2022-07-22 17:57:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:57:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:57:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:57:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:53,590 INFO L87 Difference]: Start difference. First operand 11869 states and 15425 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:57:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:57:54,975 INFO L93 Difference]: Finished difference Result 22325 states and 29122 transitions. [2022-07-22 17:57:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:57:54,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 207 [2022-07-22 17:57:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:57:55,002 INFO L225 Difference]: With dead ends: 22325 [2022-07-22 17:57:55,002 INFO L226 Difference]: Without dead ends: 10725 [2022-07-22 17:57:55,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:57:55,015 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 233 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:57:55,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 492 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:57:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10725 states. [2022-07-22 17:57:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10725 to 10693. [2022-07-22 17:57:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10693 states, 8112 states have (on average 1.3037475345167653) internal successors, (10576), 8174 states have internal predecessors, (10576), 1665 states have call successors, (1665), 915 states have call predecessors, (1665), 915 states have return successors, (1665), 1603 states have call predecessors, (1665), 1665 states have call successors, (1665) [2022-07-22 17:57:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10693 states to 10693 states and 13906 transitions. [2022-07-22 17:57:56,490 INFO L78 Accepts]: Start accepts. Automaton has 10693 states and 13906 transitions. Word has length 207 [2022-07-22 17:57:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:57:56,490 INFO L495 AbstractCegarLoop]: Abstraction has 10693 states and 13906 transitions. [2022-07-22 17:57:56,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:57:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 10693 states and 13906 transitions. [2022-07-22 17:57:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 17:57:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:57:56,503 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 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] [2022-07-22 17:57:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 17:57:56,503 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:57:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:57:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 147970794, now seen corresponding path program 1 times [2022-07-22 17:57:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:57:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600566676] [2022-07-22 17:57:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:57:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:57:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:57:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:57:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:57:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:57:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:57:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:57:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:57:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:57:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:57:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 17:57:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 17:57:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 17:57:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:57:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 17:57:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 17:57:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 17:57:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:57:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600566676] [2022-07-22 17:57:56,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600566676] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:57:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015628109] [2022-07-22 17:57:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:57:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:57:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:57:56,616 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) [2022-07-22 17:57:56,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:57:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:57:56,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 17:57:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:57:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 8 proven. 115 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:57:57,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:57:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 17:57:57,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015628109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:57:57,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:57:57,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-22 17:57:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932662554] [2022-07-22 17:57:57,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:57:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:57:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:57:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:57:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:57:57,222 INFO L87 Difference]: Start difference. First operand 10693 states and 13906 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-22 17:58:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:00,225 INFO L93 Difference]: Finished difference Result 33530 states and 43784 transitions. [2022-07-22 17:58:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 17:58:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 208 [2022-07-22 17:58:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:00,262 INFO L225 Difference]: With dead ends: 33530 [2022-07-22 17:58:00,262 INFO L226 Difference]: Without dead ends: 23272 [2022-07-22 17:58:00,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:58:00,275 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 784 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:00,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2629 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:58:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23272 states. [2022-07-22 17:58:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23272 to 16703. [2022-07-22 17:58:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16703 states, 12786 states have (on average 1.288596902862506) internal successors, (16476), 12901 states have internal predecessors, (16476), 2494 states have call successors, (2494), 1422 states have call predecessors, (2494), 1422 states have return successors, (2494), 2379 states have call predecessors, (2494), 2494 states have call successors, (2494) [2022-07-22 17:58:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16703 states to 16703 states and 21464 transitions. [2022-07-22 17:58:02,420 INFO L78 Accepts]: Start accepts. Automaton has 16703 states and 21464 transitions. Word has length 208 [2022-07-22 17:58:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:02,421 INFO L495 AbstractCegarLoop]: Abstraction has 16703 states and 21464 transitions. [2022-07-22 17:58:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-22 17:58:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 16703 states and 21464 transitions. [2022-07-22 17:58:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 17:58:02,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:02,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:58:02,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 17:58:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:02,630 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1640642370, now seen corresponding path program 1 times [2022-07-22 17:58:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:02,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313714592] [2022-07-22 17:58:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:58:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:58:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:58:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:58:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 17:58:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 17:58:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-22 17:58:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:58:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:58:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:58:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-22 17:58:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:02,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313714592] [2022-07-22 17:58:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313714592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408822655] [2022-07-22 17:58:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:02,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:02,779 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) [2022-07-22 17:58:02,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 17:58:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:58:02,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 17:58:03,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:58:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-22 17:58:03,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408822655] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:58:03,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:58:03,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-22 17:58:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063144765] [2022-07-22 17:58:03,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:58:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:58:03,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:58:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:58:03,253 INFO L87 Difference]: Start difference. First operand 16703 states and 21464 transitions. Second operand has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 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) [2022-07-22 17:58:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:06,731 INFO L93 Difference]: Finished difference Result 38927 states and 51697 transitions. [2022-07-22 17:58:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:58:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 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 208 [2022-07-22 17:58:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:06,777 INFO L225 Difference]: With dead ends: 38927 [2022-07-22 17:58:06,777 INFO L226 Difference]: Without dead ends: 22530 [2022-07-22 17:58:06,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:58:06,796 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 284 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:06,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2290 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:58:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22530 states. [2022-07-22 17:58:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22530 to 16703. [2022-07-22 17:58:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16703 states, 12786 states have (on average 1.2882058501486) internal successors, (16471), 12901 states have internal predecessors, (16471), 2494 states have call successors, (2494), 1422 states have call predecessors, (2494), 1422 states have return successors, (2494), 2379 states have call predecessors, (2494), 2494 states have call successors, (2494) [2022-07-22 17:58:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16703 states to 16703 states and 21459 transitions. [2022-07-22 17:58:08,998 INFO L78 Accepts]: Start accepts. Automaton has 16703 states and 21459 transitions. Word has length 208 [2022-07-22 17:58:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:08,998 INFO L495 AbstractCegarLoop]: Abstraction has 16703 states and 21459 transitions. [2022-07-22 17:58:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 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) [2022-07-22 17:58:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16703 states and 21459 transitions. [2022-07-22 17:58:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 17:58:09,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:09,010 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, 1] [2022-07-22 17:58:09,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:09,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:09,224 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2029022934, now seen corresponding path program 1 times [2022-07-22 17:58:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:09,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702491914] [2022-07-22 17:58:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:58:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:58:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:58:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:58:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:58:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:58:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:58:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 17:58:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-22 17:58:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-22 17:58:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-22 17:58:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 17:58:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:09,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702491914] [2022-07-22 17:58:09,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702491914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:09,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281248900] [2022-07-22 17:58:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:09,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:09,524 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) [2022-07-22 17:58:09,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 17:58:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:09,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 17:58:09,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 17:58:10,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:58:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 17:58:11,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281248900] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:58:11,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:58:11,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 10] total 22 [2022-07-22 17:58:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77364858] [2022-07-22 17:58:11,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:58:11,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 17:58:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:11,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 17:58:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-22 17:58:11,308 INFO L87 Difference]: Start difference. First operand 16703 states and 21459 transitions. Second operand has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 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) [2022-07-22 17:58:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:17,794 INFO L93 Difference]: Finished difference Result 39985 states and 53432 transitions. [2022-07-22 17:58:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 17:58:17,795 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 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 215 [2022-07-22 17:58:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:17,863 INFO L225 Difference]: With dead ends: 39985 [2022-07-22 17:58:17,863 INFO L226 Difference]: Without dead ends: 26697 [2022-07-22 17:58:17,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=643, Invalid=1907, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 17:58:17,883 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 3590 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:17,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3591 Valid, 3041 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:58:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26697 states. [2022-07-22 17:58:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26697 to 14070. [2022-07-22 17:58:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14070 states, 10675 states have (on average 1.2816861826697892) internal successors, (13682), 10776 states have internal predecessors, (13682), 2181 states have call successors, (2181), 1213 states have call predecessors, (2181), 1213 states have return successors, (2181), 2080 states have call predecessors, (2181), 2181 states have call successors, (2181) [2022-07-22 17:58:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14070 states to 14070 states and 18044 transitions. [2022-07-22 17:58:19,975 INFO L78 Accepts]: Start accepts. Automaton has 14070 states and 18044 transitions. Word has length 215 [2022-07-22 17:58:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:19,976 INFO L495 AbstractCegarLoop]: Abstraction has 14070 states and 18044 transitions. [2022-07-22 17:58:19,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 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) [2022-07-22 17:58:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 14070 states and 18044 transitions. [2022-07-22 17:58:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 17:58:19,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:19,983 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, 1] [2022-07-22 17:58:20,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:20,184 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,SelfDestructingSolverStorable37 [2022-07-22 17:58:20,184 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1439794329, now seen corresponding path program 1 times [2022-07-22 17:58:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:20,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045314038] [2022-07-22 17:58:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:20,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:58:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:58:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:58:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:58:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:58:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:58:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 17:58:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:58:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:58:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:58:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:58:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 17:58:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045314038] [2022-07-22 17:58:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045314038] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827369199] [2022-07-22 17:58:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:20,320 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) [2022-07-22 17:58:20,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 17:58:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:20,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 17:58:20,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 17:58:20,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:58:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 17:58:20,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827369199] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:58:20,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:58:20,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-22 17:58:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838485971] [2022-07-22 17:58:20,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:58:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:58:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:58:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:58:20,904 INFO L87 Difference]: Start difference. First operand 14070 states and 18044 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 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) [2022-07-22 17:58:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:28,228 INFO L93 Difference]: Finished difference Result 43858 states and 59285 transitions. [2022-07-22 17:58:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-22 17:58:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 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 216 [2022-07-22 17:58:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:28,291 INFO L225 Difference]: With dead ends: 43858 [2022-07-22 17:58:28,291 INFO L226 Difference]: Without dead ends: 31438 [2022-07-22 17:58:28,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-22 17:58:28,308 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 2474 mSDsluCounter, 6173 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 7155 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:28,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 7155 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:58:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31438 states. [2022-07-22 17:58:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31438 to 17971. [2022-07-22 17:58:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 13831 states have (on average 1.2728653025811583) internal successors, (17605), 13950 states have internal predecessors, (17605), 2623 states have call successors, (2623), 1516 states have call predecessors, (2623), 1516 states have return successors, (2623), 2504 states have call predecessors, (2623), 2623 states have call successors, (2623) [2022-07-22 17:58:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 22851 transitions. [2022-07-22 17:58:31,077 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 22851 transitions. Word has length 216 [2022-07-22 17:58:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:31,077 INFO L495 AbstractCegarLoop]: Abstraction has 17971 states and 22851 transitions. [2022-07-22 17:58:31,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 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) [2022-07-22 17:58:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 22851 transitions. [2022-07-22 17:58:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 17:58:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:31,086 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, 1] [2022-07-22 17:58:31,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:31,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-22 17:58:31,287 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 71333719, now seen corresponding path program 1 times [2022-07-22 17:58:31,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:31,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005703108] [2022-07-22 17:58:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:31,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:58:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:58:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:58:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:58:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:58:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:58:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 17:58:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:58:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:58:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:58:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:58:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 17:58:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:31,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005703108] [2022-07-22 17:58:31,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005703108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:31,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:31,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:58:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574267819] [2022-07-22 17:58:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:31,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:58:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:58:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:58:31,357 INFO L87 Difference]: Start difference. First operand 17971 states and 22851 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2022-07-22 17:58:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:33,479 INFO L93 Difference]: Finished difference Result 30612 states and 39107 transitions. [2022-07-22 17:58:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:58:33,479 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), 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 216 [2022-07-22 17:58:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:33,506 INFO L225 Difference]: With dead ends: 30612 [2022-07-22 17:58:33,506 INFO L226 Difference]: Without dead ends: 13650 [2022-07-22 17:58:33,526 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 [2022-07-22 17:58:33,526 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 239 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:33,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 488 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:58:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13650 states. [2022-07-22 17:58:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13650 to 13607. [2022-07-22 17:58:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13607 states, 10554 states have (on average 1.2748720864127345) internal successors, (13455), 10636 states have internal predecessors, (13455), 1931 states have call successors, (1931), 1121 states have call predecessors, (1931), 1121 states have return successors, (1931), 1849 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-07-22 17:58:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13607 states to 13607 states and 17317 transitions. [2022-07-22 17:58:35,560 INFO L78 Accepts]: Start accepts. Automaton has 13607 states and 17317 transitions. Word has length 216 [2022-07-22 17:58:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:35,560 INFO L495 AbstractCegarLoop]: Abstraction has 13607 states and 17317 transitions. [2022-07-22 17:58:35,560 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), 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) [2022-07-22 17:58:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 13607 states and 17317 transitions. [2022-07-22 17:58:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-22 17:58:35,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:35,565 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, 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] [2022-07-22 17:58:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 17:58:35,565 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1981403120, now seen corresponding path program 1 times [2022-07-22 17:58:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636982775] [2022-07-22 17:58:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:58:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:58:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:58:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:58:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:58:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:58:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:58:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 17:58:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:58:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 17:58:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 17:58:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 17:58:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 17:58:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 17:58:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-22 17:58:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-22 17:58:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:35,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636982775] [2022-07-22 17:58:35,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636982775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:35,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:35,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:58:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318804471] [2022-07-22 17:58:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:35,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:58:35,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:58:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:58:35,653 INFO L87 Difference]: Start difference. First operand 13607 states and 17317 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, (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) [2022-07-22 17:58:40,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:40,051 INFO L93 Difference]: Finished difference Result 35344 states and 45987 transitions. [2022-07-22 17:58:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:58:40,051 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, (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 [2022-07-22 17:58:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:40,099 INFO L225 Difference]: With dead ends: 35344 [2022-07-22 17:58:40,100 INFO L226 Difference]: Without dead ends: 25650 [2022-07-22 17:58:40,114 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 [2022-07-22 17:58:40,114 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 615 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:40,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 3014 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:58:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25650 states. [2022-07-22 17:58:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25650 to 16802. [2022-07-22 17:58:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2675574891236794) internal successors, (16316), 12986 states have internal predecessors, (16316), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-22 17:58:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21292 transitions. [2022-07-22 17:58:42,710 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21292 transitions. Word has length 217 [2022-07-22 17:58:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:42,710 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21292 transitions. [2022-07-22 17:58:42,710 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, (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) [2022-07-22 17:58:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21292 transitions. [2022-07-22 17:58:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-22 17:58:42,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:42,717 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, 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] [2022-07-22 17:58:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-22 17:58:42,718 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1125932149, now seen corresponding path program 1 times [2022-07-22 17:58:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:42,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996227858] [2022-07-22 17:58:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:58:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:58:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:58:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:58:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:58:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:58:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:58:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:58:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 17:58:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:58:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 17:58:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 17:58:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 17:58:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 17:58:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-22 17:58:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 17:58:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 17:58:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:42,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996227858] [2022-07-22 17:58:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996227858] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255848999] [2022-07-22 17:58:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:42,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:42,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:42,889 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) [2022-07-22 17:58:42,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 17:58:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:43,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 17:58:43,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 17:58:43,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:58:43,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255848999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:43,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:58:43,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-22 17:58:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724406423] [2022-07-22 17:58:43,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:58:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:58:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:58:43,187 INFO L87 Difference]: Start difference. First operand 16802 states and 21292 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) [2022-07-22 17:58:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:46,982 INFO L93 Difference]: Finished difference Result 36219 states and 47080 transitions. [2022-07-22 17:58:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:58:46,982 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 [2022-07-22 17:58:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:47,020 INFO L225 Difference]: With dead ends: 36219 [2022-07-22 17:58:47,021 INFO L226 Difference]: Without dead ends: 20739 [2022-07-22 17:58:47,035 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 [2022-07-22 17:58:47,036 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 674 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:47,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 2222 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:58:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20739 states. [2022-07-22 17:58:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20739 to 16802. [2022-07-22 17:58:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2608763206960845) internal successors, (16230), 12986 states have internal predecessors, (16230), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-22 17:58:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21206 transitions. [2022-07-22 17:58:49,606 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21206 transitions. Word has length 218 [2022-07-22 17:58:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:49,607 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21206 transitions. [2022-07-22 17:58:49,607 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) [2022-07-22 17:58:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21206 transitions. [2022-07-22 17:58:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-22 17:58:49,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:49,614 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, 1] [2022-07-22 17:58:49,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:49,824 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,SelfDestructingSolverStorable41 [2022-07-22 17:58:49,826 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1772199745, now seen corresponding path program 1 times [2022-07-22 17:58:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60165485] [2022-07-22 17:58:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:58:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:58:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:58:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:58:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:58:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:58:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 17:58:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:58:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:58:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:58:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:58:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-22 17:58:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 17:58:49,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:49,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60165485] [2022-07-22 17:58:49,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60165485] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:58:49,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264431982] [2022-07-22 17:58:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:49,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:58:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:58:49,982 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) [2022-07-22 17:58:49,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 17:58:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:50,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:58:50,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:58:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 17:58:50,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:58:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 17:58:50,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264431982] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:58:50,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:58:50,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-22 17:58:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866131091] [2022-07-22 17:58:50,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:58:50,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:58:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:50,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:58:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:58:50,549 INFO L87 Difference]: Start difference. First operand 16802 states and 21206 transitions. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 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) [2022-07-22 17:58:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:58:54,304 INFO L93 Difference]: Finished difference Result 32039 states and 40782 transitions. [2022-07-22 17:58:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 17:58:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 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 224 [2022-07-22 17:58:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:58:54,344 INFO L225 Difference]: With dead ends: 32039 [2022-07-22 17:58:54,344 INFO L226 Difference]: Without dead ends: 19596 [2022-07-22 17:58:54,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 481 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-22 17:58:54,363 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1267 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:58:54,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 3947 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:58:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19596 states. [2022-07-22 17:58:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19596 to 16802. [2022-07-22 17:58:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2569142324425109) internal successors, (16179), 12986 states have internal predecessors, (16179), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-22 17:58:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21155 transitions. [2022-07-22 17:58:57,068 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21155 transitions. Word has length 224 [2022-07-22 17:58:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:58:57,069 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21155 transitions. [2022-07-22 17:58:57,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 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) [2022-07-22 17:58:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21155 transitions. [2022-07-22 17:58:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-22 17:58:57,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:58:57,077 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, 1] [2022-07-22 17:58:57,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 17:58:57,278 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,SelfDestructingSolverStorable42 [2022-07-22 17:58:57,279 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:58:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:58:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1176450, now seen corresponding path program 1 times [2022-07-22 17:58:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:58:57,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370216340] [2022-07-22 17:58:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:58:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:58:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:58:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:58:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:58:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:58:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:58:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:58:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:58:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:58:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:58:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:58:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:58:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:58:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 17:58:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:58:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:58:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:58:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:58:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-22 17:58:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:58:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 17:58:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:58:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370216340] [2022-07-22 17:58:57,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370216340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:58:57,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:58:57,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:58:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243638967] [2022-07-22 17:58:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:58:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:58:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:58:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:58:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:58:57,394 INFO L87 Difference]: Start difference. First operand 16802 states and 21155 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 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) [2022-07-22 17:59:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:01,319 INFO L93 Difference]: Finished difference Result 32701 states and 42222 transitions. [2022-07-22 17:59:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:59:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 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 224 [2022-07-22 17:59:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:01,366 INFO L225 Difference]: With dead ends: 32701 [2022-07-22 17:59:01,367 INFO L226 Difference]: Without dead ends: 20749 [2022-07-22 17:59:01,384 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 [2022-07-22 17:59:01,384 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 702 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:01,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2612 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:59:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2022-07-22 17:59:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 16793. [2022-07-22 17:59:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 12863 states have (on average 1.2556946280027987) internal successors, (16152), 12977 states have internal predecessors, (16152), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-22 17:59:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 21128 transitions. [2022-07-22 17:59:04,189 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 21128 transitions. Word has length 224 [2022-07-22 17:59:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:04,190 INFO L495 AbstractCegarLoop]: Abstraction has 16793 states and 21128 transitions. [2022-07-22 17:59:04,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 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) [2022-07-22 17:59:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 21128 transitions. [2022-07-22 17:59:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 17:59:04,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:04,200 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] [2022-07-22 17:59:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-22 17:59:04,200 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 442167154, now seen corresponding path program 1 times [2022-07-22 17:59:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735427908] [2022-07-22 17:59:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:59:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:59:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:59:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:59:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:59:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:59:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:59:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:59:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:59:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:59:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:59:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:59:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 17:59:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 17:59:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 17:59:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 17:59:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-22 17:59:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-22 17:59:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 17:59:04,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:04,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735427908] [2022-07-22 17:59:04,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735427908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144089555] [2022-07-22 17:59:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:04,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:04,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:04,344 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) [2022-07-22 17:59:04,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 17:59:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:04,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:59:04,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:59:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 17:59:04,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:59:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 17:59:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144089555] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:59:05,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:59:05,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-07-22 17:59:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89382384] [2022-07-22 17:59:05,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:59:05,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 17:59:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 17:59:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:59:05,022 INFO L87 Difference]: Start difference. First operand 16793 states and 21128 transitions. Second operand has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-22 17:59:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:16,048 INFO L93 Difference]: Finished difference Result 52225 states and 70066 transitions. [2022-07-22 17:59:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 17:59:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) Word has length 225 [2022-07-22 17:59:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:16,135 INFO L225 Difference]: With dead ends: 52225 [2022-07-22 17:59:16,135 INFO L226 Difference]: Without dead ends: 37039 [2022-07-22 17:59:16,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 17:59:16,160 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 3676 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 6045 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 6999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 6045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:16,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 5911 Invalid, 6999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 6045 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:59:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37039 states. [2022-07-22 17:59:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37039 to 20611. [2022-07-22 17:59:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20611 states, 15696 states have (on average 1.2568170234454639) internal successors, (19727), 15839 states have internal predecessors, (19727), 3115 states have call successors, (3115), 1799 states have call predecessors, (3115), 1799 states have return successors, (3115), 2972 states have call predecessors, (3115), 3115 states have call successors, (3115) [2022-07-22 17:59:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 25957 transitions. [2022-07-22 17:59:20,054 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 25957 transitions. Word has length 225 [2022-07-22 17:59:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 20611 states and 25957 transitions. [2022-07-22 17:59:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-22 17:59:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 25957 transitions. [2022-07-22 17:59:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 17:59:20,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:20,062 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, 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] [2022-07-22 17:59:20,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 17:59:20,262 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,SelfDestructingSolverStorable44 [2022-07-22 17:59:20,263 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:20,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1332474075, now seen corresponding path program 1 times [2022-07-22 17:59:20,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:20,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097277892] [2022-07-22 17:59:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:59:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:59:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:59:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:59:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:59:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:59:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:59:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:59:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:59:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:59:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 17:59:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:59:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 17:59:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-22 17:59:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 17:59:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 17:59:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-22 17:59:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 17:59:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-22 17:59:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-22 17:59:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097277892] [2022-07-22 17:59:20,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097277892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507098590] [2022-07-22 17:59:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:20,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:20,383 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) [2022-07-22 17:59:20,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 17:59:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:20,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:59:20,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:59:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 17:59:20,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:59:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 17:59:20,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507098590] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:59:20,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:59:20,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-22 17:59:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281878061] [2022-07-22 17:59:20,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:59:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:59:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:59:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:59:20,801 INFO L87 Difference]: Start difference. First operand 20611 states and 25957 transitions. Second operand has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 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) [2022-07-22 17:59:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:31,111 INFO L93 Difference]: Finished difference Result 54867 states and 72881 transitions. [2022-07-22 17:59:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 17:59:31,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 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 [2022-07-22 17:59:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:31,215 INFO L225 Difference]: With dead ends: 54867 [2022-07-22 17:59:31,215 INFO L226 Difference]: Without dead ends: 36131 [2022-07-22 17:59:31,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-22 17:59:31,240 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2130 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 6930 SdHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:31,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 6930 Invalid, 4523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:59:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36131 states. [2022-07-22 17:59:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36131 to 21055. [2022-07-22 17:59:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21055 states, 16086 states have (on average 1.2553773467611589) internal successors, (20194), 16227 states have internal predecessors, (20194), 3142 states have call successors, (3142), 1826 states have call predecessors, (3142), 1826 states have return successors, (3142), 3001 states have call predecessors, (3142), 3142 states have call successors, (3142) [2022-07-22 17:59:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21055 states to 21055 states and 26478 transitions. [2022-07-22 17:59:35,261 INFO L78 Accepts]: Start accepts. Automaton has 21055 states and 26478 transitions. Word has length 226 [2022-07-22 17:59:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:35,262 INFO L495 AbstractCegarLoop]: Abstraction has 21055 states and 26478 transitions. [2022-07-22 17:59:35,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 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) [2022-07-22 17:59:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 21055 states and 26478 transitions. [2022-07-22 17:59:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 17:59:35,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:35,268 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] [2022-07-22 17:59:35,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-22 17:59:35,469 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,SelfDestructingSolverStorable45 [2022-07-22 17:59:35,469 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -587113781, now seen corresponding path program 1 times [2022-07-22 17:59:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:35,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664329846] [2022-07-22 17:59:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:59:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:59:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:59:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:59:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:59:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:59:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:59:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:59:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:59:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:59:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:59:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 17:59:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-22 17:59:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 17:59:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 17:59:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-22 17:59:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 17:59:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-22 17:59:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-22 17:59:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:35,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664329846] [2022-07-22 17:59:35,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664329846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:35,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:35,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:59:35,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704359212] [2022-07-22 17:59:35,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:59:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:59:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:35,538 INFO L87 Difference]: Start difference. First operand 21055 states and 26478 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-07-22 17:59:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:39,888 INFO L93 Difference]: Finished difference Result 40481 states and 51439 transitions. [2022-07-22 17:59:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 226 [2022-07-22 17:59:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:39,940 INFO L225 Difference]: With dead ends: 40481 [2022-07-22 17:59:39,940 INFO L226 Difference]: Without dead ends: 24788 [2022-07-22 17:59:39,962 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 [2022-07-22 17:59:39,962 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 471 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:39,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1325 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:59:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24788 states. [2022-07-22 17:59:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24788 to 23080. [2022-07-22 17:59:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23080 states, 17609 states have (on average 1.2496450678630247) internal successors, (22005), 17762 states have internal predecessors, (22005), 3464 states have call successors, (3464), 2006 states have call predecessors, (3464), 2006 states have return successors, (3464), 3311 states have call predecessors, (3464), 3464 states have call successors, (3464) [2022-07-22 17:59:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23080 states to 23080 states and 28933 transitions. [2022-07-22 17:59:44,128 INFO L78 Accepts]: Start accepts. Automaton has 23080 states and 28933 transitions. Word has length 226 [2022-07-22 17:59:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:44,129 INFO L495 AbstractCegarLoop]: Abstraction has 23080 states and 28933 transitions. [2022-07-22 17:59:44,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-07-22 17:59:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 23080 states and 28933 transitions. [2022-07-22 17:59:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-22 17:59:44,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:44,140 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, 1] [2022-07-22 17:59:44,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 17:59:44,140 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash 876277694, now seen corresponding path program 1 times [2022-07-22 17:59:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868259595] [2022-07-22 17:59:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:59:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:59:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:59:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:59:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:59:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:59:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:59:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:59:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:59:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:59:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:59:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 17:59:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 17:59:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-22 17:59:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-22 17:59:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-22 17:59:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-22 17:59:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-22 17:59:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 17:59:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:44,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868259595] [2022-07-22 17:59:44,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868259595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:44,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138398989] [2022-07-22 17:59:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:44,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:44,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:44,477 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) [2022-07-22 17:59:44,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 17:59:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:44,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 17:59:44,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:59:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 91 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 17:59:45,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:59:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 17:59:45,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138398989] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:59:45,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:59:45,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 21 [2022-07-22 17:59:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413166429] [2022-07-22 17:59:45,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:59:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 17:59:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 17:59:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:59:45,596 INFO L87 Difference]: Start difference. First operand 23080 states and 28933 transitions. Second operand has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 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) [2022-07-22 17:59:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:54,818 INFO L93 Difference]: Finished difference Result 48569 states and 62577 transitions. [2022-07-22 17:59:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-22 17:59:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 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 227 [2022-07-22 17:59:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:54,875 INFO L225 Difference]: With dead ends: 48569 [2022-07-22 17:59:54,876 INFO L226 Difference]: Without dead ends: 29119 [2022-07-22 17:59:54,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 480 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 17:59:54,901 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 5571 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 2420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2420 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:54,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 3489 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2420 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 17:59:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29119 states. [2022-07-22 17:59:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29119 to 22573. [2022-07-22 17:59:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22573 states, 17227 states have (on average 1.2487954954431997) internal successors, (21513), 17375 states have internal predecessors, (21513), 3387 states have call successors, (3387), 1958 states have call predecessors, (3387), 1958 states have return successors, (3387), 3239 states have call predecessors, (3387), 3387 states have call successors, (3387) [2022-07-22 17:59:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22573 states to 22573 states and 28287 transitions. [2022-07-22 17:59:59,213 INFO L78 Accepts]: Start accepts. Automaton has 22573 states and 28287 transitions. Word has length 227 [2022-07-22 17:59:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:59,213 INFO L495 AbstractCegarLoop]: Abstraction has 22573 states and 28287 transitions. [2022-07-22 17:59:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 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) [2022-07-22 17:59:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 22573 states and 28287 transitions. [2022-07-22 17:59:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-22 17:59:59,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:59,221 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, 1] [2022-07-22 17:59:59,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-22 17:59:59,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:59,422 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 386660913, now seen corresponding path program 1 times [2022-07-22 17:59:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225642028] [2022-07-22 17:59:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:59:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:59:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:59:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:59:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:59:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:59:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:59:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:59:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:59:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:59:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 17:59:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 17:59:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 17:59:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 17:59:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 17:59:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 17:59:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 17:59:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-22 17:59:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 17:59:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 17:59:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:59,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225642028] [2022-07-22 17:59:59,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225642028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:59:59,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257147495] [2022-07-22 17:59:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:59,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:59:59,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:59,604 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) [2022-07-22 17:59:59,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 17:59:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:59,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:59:59,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:00:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 18:00:00,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:00:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 18:00:00,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257147495] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:00:00,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:00:00,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-07-22 18:00:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203530209] [2022-07-22 18:00:00,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:00:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 18:00:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 18:00:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:00:00,235 INFO L87 Difference]: Start difference. First operand 22573 states and 28287 transitions. Second operand has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 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) [2022-07-22 18:00:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:16,263 INFO L93 Difference]: Finished difference Result 60216 states and 77246 transitions. [2022-07-22 18:00:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-22 18:00:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 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 232 [2022-07-22 18:00:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:16,361 INFO L225 Difference]: With dead ends: 60216 [2022-07-22 18:00:16,361 INFO L226 Difference]: Without dead ends: 42517 [2022-07-22 18:00:16,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-07-22 18:00:16,392 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 4670 mSDsluCounter, 9571 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 2243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 10730 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2243 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:16,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 10730 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2243 Valid, 3244 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 18:00:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42517 states. [2022-07-22 18:00:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42517 to 24878. [2022-07-22 18:00:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24878 states, 18933 states have (on average 1.2412718533777003) internal successors, (23501), 19101 states have internal predecessors, (23501), 3687 states have call successors, (3687), 2257 states have call predecessors, (3687), 2257 states have return successors, (3687), 3519 states have call predecessors, (3687), 3687 states have call successors, (3687) [2022-07-22 18:00:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24878 states to 24878 states and 30875 transitions. [2022-07-22 18:00:23,430 INFO L78 Accepts]: Start accepts. Automaton has 24878 states and 30875 transitions. Word has length 232 [2022-07-22 18:00:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:23,431 INFO L495 AbstractCegarLoop]: Abstraction has 24878 states and 30875 transitions. [2022-07-22 18:00:23,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 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) [2022-07-22 18:00:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 24878 states and 30875 transitions. [2022-07-22 18:00:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-22 18:00:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:23,442 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, 1, 1] [2022-07-22 18:00:23,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 18:00:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-22 18:00:23,668 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash -377182332, now seen corresponding path program 1 times [2022-07-22 18:00:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129297819] [2022-07-22 18:00:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:23,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 18:00:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 18:00:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 18:00:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 18:00:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 18:00:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 18:00:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 18:00:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 18:00:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 18:00:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 18:00:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 18:00:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 18:00:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 18:00:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 18:00:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 18:00:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-22 18:00:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 18:00:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 18:00:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-22 18:00:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:23,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129297819] [2022-07-22 18:00:23,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129297819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:23,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:23,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:00:23,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209416217] [2022-07-22 18:00:23,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:23,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:00:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:00:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:00:23,884 INFO L87 Difference]: Start difference. First operand 24878 states and 30875 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 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) [2022-07-22 18:00:32,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:32,775 INFO L93 Difference]: Finished difference Result 51811 states and 65654 transitions. [2022-07-22 18:00:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:00:32,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 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 231 [2022-07-22 18:00:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:32,840 INFO L225 Difference]: With dead ends: 51811 [2022-07-22 18:00:32,841 INFO L226 Difference]: Without dead ends: 29709 [2022-07-22 18:00:32,864 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 [2022-07-22 18:00:32,864 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 431 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:32,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1074 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:00:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2022-07-22 18:00:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 24866. [2022-07-22 18:00:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24866 states, 18921 states have (on average 1.2401564399344644) internal successors, (23465), 19089 states have internal predecessors, (23465), 3687 states have call successors, (3687), 2257 states have call predecessors, (3687), 2257 states have return successors, (3687), 3519 states have call predecessors, (3687), 3687 states have call successors, (3687) [2022-07-22 18:00:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24866 states to 24866 states and 30839 transitions. [2022-07-22 18:00:38,739 INFO L78 Accepts]: Start accepts. Automaton has 24866 states and 30839 transitions. Word has length 231 [2022-07-22 18:00:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:38,740 INFO L495 AbstractCegarLoop]: Abstraction has 24866 states and 30839 transitions. [2022-07-22 18:00:38,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 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) [2022-07-22 18:00:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24866 states and 30839 transitions. [2022-07-22 18:00:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-22 18:00:38,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:38,749 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, 1, 1] [2022-07-22 18:00:38,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-22 18:00:38,750 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1767162910, now seen corresponding path program 1 times [2022-07-22 18:00:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:38,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209760831] [2022-07-22 18:00:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 18:00:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 18:00:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 18:00:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 18:00:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 18:00:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 18:00:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 18:00:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 18:00:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 18:00:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 18:00:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 18:00:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 18:00:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 18:00:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 18:00:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 18:00:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-22 18:00:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 18:00:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 18:00:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 18:00:38,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:38,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209760831] [2022-07-22 18:00:38,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209760831] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:00:38,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228824996] [2022-07-22 18:00:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:38,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:00:38,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:00:38,890 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) [2022-07-22 18:00:38,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 18:00:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:39,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 18:00:39,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:00:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 18:00:39,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:00:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 18:00:39,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228824996] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:00:39,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:00:39,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-22 18:00:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033230869] [2022-07-22 18:00:39,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:00:39,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:00:39,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:00:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:00:39,577 INFO L87 Difference]: Start difference. First operand 24866 states and 30839 transitions. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 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)