./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:19:20,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:19:20,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:19:20,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:19:20,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:19:20,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:19:20,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:19:20,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:19:20,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:19:20,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:19:20,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:19:20,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:19:20,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:19:20,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:19:20,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:19:20,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:19:20,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:19:20,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:19:20,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:19:20,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:19:20,837 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:19:20,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:19:20,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:19:20,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:19:20,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:19:20,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:19:20,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:19:20,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:19:20,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:19:20,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:19:20,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:19:20,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:19:20,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:19:20,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:19:20,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:19:20,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:19:20,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:19:20,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:19:20,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:19:20,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:19:20,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:19:20,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:19:20,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:19:20,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:19:20,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:19:20,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:19:20,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:19:20,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:19:20,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:19:20,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:19:20,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:19:20,886 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:19:20,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:19:20,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:19:20,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:19:20,887 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:19:20,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:19:20,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:19:20,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:19:20,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:19:20,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:19:20,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:19:20,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:19:20,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:19:20,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:19:20,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:19:20,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:19:20,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:19:20,890 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:19:20,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:19:20,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:19:20,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2022-07-21 05:19:21,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:19:21,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:19:21,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:19:21,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:19:21,234 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:19:21,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:21,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88e87908/be5aa3817a6547ab95a5833af3208dce/FLAG10d91cb58 [2022-07-21 05:19:21,685 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:19:21,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:21,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88e87908/be5aa3817a6547ab95a5833af3208dce/FLAG10d91cb58 [2022-07-21 05:19:21,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88e87908/be5aa3817a6547ab95a5833af3208dce [2022-07-21 05:19:21,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:19:21,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:19:21,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:19:21,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:19:21,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:19:21,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:21,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fca4605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21, skipping insertion in model container [2022-07-21 05:19:21,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:21,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:19:21,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:19:21,931 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.UNBOUNDED.pals.c[14680,14693] [2022-07-21 05:19:21,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:19:21,938 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:19:21,976 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.UNBOUNDED.pals.c[14680,14693] [2022-07-21 05:19:21,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:19:21,986 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:19:21,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21 WrapperNode [2022-07-21 05:19:21,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:19:21,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:19:21,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:19:21,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:19:21,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,054 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 535 [2022-07-21 05:19:22,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:19:22,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:19:22,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:19:22,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:19:22,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:19:22,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:19:22,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:19:22,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:19:22,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (1/1) ... [2022-07-21 05:19:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:19:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:22,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:19:22,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:19:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-21 05:19:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-21 05:19:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:19:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-21 05:19:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-21 05:19:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:19:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:19:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-07-21 05:19:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-07-21 05:19:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:19:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:19:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:19:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-21 05:19:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-21 05:19:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:19:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:19:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-21 05:19:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-21 05:19:22,324 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:19:22,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:19:22,735 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:19:22,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:19:22,744 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:19:22,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:19:22 BoogieIcfgContainer [2022-07-21 05:19:22,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:19:22,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:19:22,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:19:22,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:19:22,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:19:21" (1/3) ... [2022-07-21 05:19:22,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f3990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:19:22, skipping insertion in model container [2022-07-21 05:19:22,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:21" (2/3) ... [2022-07-21 05:19:22,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f3990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:19:22, skipping insertion in model container [2022-07-21 05:19:22,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:19:22" (3/3) ... [2022-07-21 05:19:22,751 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:22,761 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:19:22,761 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:19:22,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:19:22,810 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@367095e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4741b91c [2022-07-21 05:19:22,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:19:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 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) [2022-07-21 05:19:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:19:22,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:22,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:22,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1527920627, now seen corresponding path program 1 times [2022-07-21 05:19:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:22,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192548705] [2022-07-21 05:19:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:23,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192548705] [2022-07-21 05:19:23,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192548705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:23,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:23,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:19:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569473927] [2022-07-21 05:19:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:23,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:19:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:19:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:19:23,041 INFO L87 Difference]: Start difference. First operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 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) [2022-07-21 05:19:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,089 INFO L93 Difference]: Finished difference Result 392 states and 637 transitions. [2022-07-21 05:19:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:19:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:19:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,100 INFO L225 Difference]: With dead ends: 392 [2022-07-21 05:19:23,100 INFO L226 Difference]: Without dead ends: 202 [2022-07-21 05:19:23,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:19:23,108 INFO L413 NwaCegarLoop]: 307 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, 307 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-21 05:19:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-21 05:19:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 164 states have internal predecessors, (245), 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) [2022-07-21 05:19:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 307 transitions. [2022-07-21 05:19:23,162 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 307 transitions. Word has length 44 [2022-07-21 05:19:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 307 transitions. [2022-07-21 05:19:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 307 transitions. [2022-07-21 05:19:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:19:23,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:23,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:19:23,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1536686131, now seen corresponding path program 1 times [2022-07-21 05:19:23,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:23,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283153755] [2022-07-21 05:19:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:23,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283153755] [2022-07-21 05:19:23,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283153755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:23,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:23,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:19:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203285135] [2022-07-21 05:19:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:19:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:19:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:23,276 INFO L87 Difference]: Start difference. First operand 202 states and 307 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,357 INFO L93 Difference]: Finished difference Result 390 states and 588 transitions. [2022-07-21 05:19:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:23,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:19:23,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,359 INFO L225 Difference]: With dead ends: 390 [2022-07-21 05:19:23,360 INFO L226 Difference]: Without dead ends: 202 [2022-07-21 05:19:23,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:23,362 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 171 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1296 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-21 05:19:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-21 05:19:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 164 states have internal predecessors, (233), 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) [2022-07-21 05:19:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 295 transitions. [2022-07-21 05:19:23,377 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 295 transitions. Word has length 44 [2022-07-21 05:19:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:23,377 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 295 transitions. [2022-07-21 05:19:23,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 295 transitions. [2022-07-21 05:19:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 05:19:23,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:23,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:23,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:19:23,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2082780786, now seen corresponding path program 1 times [2022-07-21 05:19:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:23,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397659177] [2022-07-21 05:19:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:23,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:23,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397659177] [2022-07-21 05:19:23,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397659177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:23,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:23,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885376207] [2022-07-21 05:19:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:23,538 INFO L87 Difference]: Start difference. First operand 202 states and 295 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,595 INFO L93 Difference]: Finished difference Result 391 states and 580 transitions. [2022-07-21 05:19:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-21 05:19:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,599 INFO L225 Difference]: With dead ends: 391 [2022-07-21 05:19:23,599 INFO L226 Difference]: Without dead ends: 206 [2022-07-21 05:19:23,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:23,607 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 5 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 857 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-21 05:19:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-21 05:19:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 166 states have (on average 1.4216867469879517) internal successors, (236), 167 states have internal predecessors, (236), 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) [2022-07-21 05:19:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 298 transitions. [2022-07-21 05:19:23,626 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 298 transitions. Word has length 55 [2022-07-21 05:19:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:23,626 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 298 transitions. [2022-07-21 05:19:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 298 transitions. [2022-07-21 05:19:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 05:19:23,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:23,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:23,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:19:23,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1990587108, now seen corresponding path program 1 times [2022-07-21 05:19:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:23,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290558736] [2022-07-21 05:19:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 05:19:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:23,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:23,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290558736] [2022-07-21 05:19:23,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290558736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:23,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:23,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820137742] [2022-07-21 05:19:23,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:23,707 INFO L87 Difference]: Start difference. First operand 206 states and 298 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,758 INFO L93 Difference]: Finished difference Result 561 states and 823 transitions. [2022-07-21 05:19:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-07-21 05:19:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,763 INFO L225 Difference]: With dead ends: 561 [2022-07-21 05:19:23,763 INFO L226 Difference]: Without dead ends: 372 [2022-07-21 05:19:23,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:23,771 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 226 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 620 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-21 05:19:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2022-07-21 05:19:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 286 states have (on average 1.4405594405594406) internal successors, (412), 288 states have internal predecessors, (412), 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) [2022-07-21 05:19:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2022-07-21 05:19:23,793 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 71 [2022-07-21 05:19:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:23,794 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2022-07-21 05:19:23,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2022-07-21 05:19:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:19:23,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:23,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:23,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:19:23,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash 687571372, now seen corresponding path program 1 times [2022-07-21 05:19:23,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:23,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233021732] [2022-07-21 05:19:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 05:19:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:23,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233021732] [2022-07-21 05:19:23,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233021732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:23,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:23,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873516672] [2022-07-21 05:19:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:23,905 INFO L87 Difference]: Start difference. First operand 363 states and 532 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) [2022-07-21 05:19:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,943 INFO L93 Difference]: Finished difference Result 1006 states and 1489 transitions. [2022-07-21 05:19:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:23,944 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 [2022-07-21 05:19:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,950 INFO L225 Difference]: With dead ends: 1006 [2022-07-21 05:19:23,950 INFO L226 Difference]: Without dead ends: 660 [2022-07-21 05:19:23,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:23,951 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 234 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 655 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-21 05:19:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 643. [2022-07-21 05:19:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 494 states have (on average 1.459514170040486) internal successors, (721), 498 states have internal predecessors, (721), 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) [2022-07-21 05:19:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 955 transitions. [2022-07-21 05:19:24,007 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 955 transitions. Word has length 72 [2022-07-21 05:19:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:24,008 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 955 transitions. [2022-07-21 05:19:24,008 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) [2022-07-21 05:19:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 955 transitions. [2022-07-21 05:19:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:19:24,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:19:24,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash -592292306, now seen corresponding path program 1 times [2022-07-21 05:19:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263372679] [2022-07-21 05:19:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 05:19:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263372679] [2022-07-21 05:19:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263372679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973288480] [2022-07-21 05:19:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:24,140 INFO L87 Difference]: Start difference. First operand 643 states and 955 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:24,411 INFO L93 Difference]: Finished difference Result 1799 states and 2717 transitions. [2022-07-21 05:19:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:19:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-21 05:19:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:24,418 INFO L225 Difference]: With dead ends: 1799 [2022-07-21 05:19:24,418 INFO L226 Difference]: Without dead ends: 1173 [2022-07-21 05:19:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:24,421 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 783 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 775 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 [2022-07-21 05:19:24,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 775 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-07-21 05:19:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 768. [2022-07-21 05:19:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 606 states have (on average 1.4372937293729373) internal successors, (871), 609 states have internal predecessors, (871), 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) [2022-07-21 05:19:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1119 transitions. [2022-07-21 05:19:24,492 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1119 transitions. Word has length 72 [2022-07-21 05:19:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1119 transitions. [2022-07-21 05:19:24,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1119 transitions. [2022-07-21 05:19:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 05:19:24,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:19:24,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 9157699, now seen corresponding path program 1 times [2022-07-21 05:19:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366541134] [2022-07-21 05:19:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 05:19:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:24,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366541134] [2022-07-21 05:19:24,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366541134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:24,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702878520] [2022-07-21 05:19:24,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:24,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:24,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:24,574 INFO L87 Difference]: Start difference. First operand 768 states and 1119 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:24,860 INFO L93 Difference]: Finished difference Result 1803 states and 2717 transitions. [2022-07-21 05:19:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:19:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-07-21 05:19:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:24,866 INFO L225 Difference]: With dead ends: 1803 [2022-07-21 05:19:24,866 INFO L226 Difference]: Without dead ends: 1177 [2022-07-21 05:19:24,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:24,869 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 780 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 777 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 [2022-07-21 05:19:24,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 777 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-21 05:19:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 776. [2022-07-21 05:19:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 614 states have (on average 1.4315960912052117) internal successors, (879), 617 states have internal predecessors, (879), 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) [2022-07-21 05:19:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1127 transitions. [2022-07-21 05:19:24,928 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1127 transitions. Word has length 73 [2022-07-21 05:19:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1127 transitions. [2022-07-21 05:19:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1127 transitions. [2022-07-21 05:19:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 05:19:24,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:19:24,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 341297525, now seen corresponding path program 1 times [2022-07-21 05:19:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336816973] [2022-07-21 05:19:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 05:19:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:24,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336816973] [2022-07-21 05:19:24,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336816973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928971772] [2022-07-21 05:19:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,002 INFO L87 Difference]: Start difference. First operand 776 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,239 INFO L93 Difference]: Finished difference Result 1803 states and 2709 transitions. [2022-07-21 05:19:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:25,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-07-21 05:19:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,245 INFO L225 Difference]: With dead ends: 1803 [2022-07-21 05:19:25,245 INFO L226 Difference]: Without dead ends: 1177 [2022-07-21 05:19:25,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,248 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 237 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 744 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 [2022-07-21 05:19:25,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 744 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-21 05:19:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 776. [2022-07-21 05:19:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 614 states have (on average 1.4250814332247557) internal successors, (875), 617 states have internal predecessors, (875), 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) [2022-07-21 05:19:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1123 transitions. [2022-07-21 05:19:25,314 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1123 transitions. Word has length 75 [2022-07-21 05:19:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,315 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1123 transitions. [2022-07-21 05:19:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1123 transitions. [2022-07-21 05:19:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 05:19:25,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:25,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:19:25,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash 662931196, now seen corresponding path program 1 times [2022-07-21 05:19:25,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446061619] [2022-07-21 05:19:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446061619] [2022-07-21 05:19:25,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446061619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523648171] [2022-07-21 05:19:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,400 INFO L87 Difference]: Start difference. First operand 776 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:19:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,459 INFO L93 Difference]: Finished difference Result 1422 states and 2088 transitions. [2022-07-21 05:19:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-07-21 05:19:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,463 INFO L225 Difference]: With dead ends: 1422 [2022-07-21 05:19:25,463 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 05:19:25,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,466 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 6 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 869 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 05:19:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-07-21 05:19:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 630 states have (on average 1.4142857142857144) internal successors, (891), 633 states have internal predecessors, (891), 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) [2022-07-21 05:19:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1139 transitions. [2022-07-21 05:19:25,521 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1139 transitions. Word has length 76 [2022-07-21 05:19:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,521 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1139 transitions. [2022-07-21 05:19:25,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:19:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1139 transitions. [2022-07-21 05:19:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:19:25,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:19:25,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash -520002270, now seen corresponding path program 1 times [2022-07-21 05:19:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770820230] [2022-07-21 05:19:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770820230] [2022-07-21 05:19:25,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770820230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625982920] [2022-07-21 05:19:25,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,597 INFO L87 Difference]: Start difference. First operand 796 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,658 INFO L93 Difference]: Finished difference Result 1462 states and 2132 transitions. [2022-07-21 05:19:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:25,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-07-21 05:19:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,677 INFO L225 Difference]: With dead ends: 1462 [2022-07-21 05:19:25,678 INFO L226 Difference]: Without dead ends: 816 [2022-07-21 05:19:25,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,680 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 6 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 855 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-07-21 05:19:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2022-07-21 05:19:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 646 states have (on average 1.4040247678018576) internal successors, (907), 649 states have internal predecessors, (907), 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) [2022-07-21 05:19:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1155 transitions. [2022-07-21 05:19:25,732 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1155 transitions. Word has length 84 [2022-07-21 05:19:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,733 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1155 transitions. [2022-07-21 05:19:25,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1155 transitions. [2022-07-21 05:19:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:19:25,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:25,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:19:25,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash -285867028, now seen corresponding path program 1 times [2022-07-21 05:19:25,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942830167] [2022-07-21 05:19:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:25,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942830167] [2022-07-21 05:19:25,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942830167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:25,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846037778] [2022-07-21 05:19:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,798 INFO L87 Difference]: Start difference. First operand 816 states and 1155 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,862 INFO L93 Difference]: Finished difference Result 1498 states and 2148 transitions. [2022-07-21 05:19:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:19:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,865 INFO L225 Difference]: With dead ends: 1498 [2022-07-21 05:19:25,866 INFO L226 Difference]: Without dead ends: 832 [2022-07-21 05:19:25,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,868 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 5 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 864 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-07-21 05:19:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2022-07-21 05:19:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 658 states have (on average 1.3966565349544073) internal successors, (919), 661 states have internal predecessors, (919), 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) [2022-07-21 05:19:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1167 transitions. [2022-07-21 05:19:25,917 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1167 transitions. Word has length 92 [2022-07-21 05:19:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,917 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1167 transitions. [2022-07-21 05:19:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1167 transitions. [2022-07-21 05:19:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:19:25,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:25,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:19:25,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2110592275, now seen corresponding path program 1 times [2022-07-21 05:19:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219937160] [2022-07-21 05:19:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219937160] [2022-07-21 05:19:25,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219937160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243609005] [2022-07-21 05:19:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,982 INFO L87 Difference]: Start difference. First operand 832 states and 1167 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,045 INFO L93 Difference]: Finished difference Result 1534 states and 2188 transitions. [2022-07-21 05:19:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:19:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,050 INFO L225 Difference]: With dead ends: 1534 [2022-07-21 05:19:26,050 INFO L226 Difference]: Without dead ends: 852 [2022-07-21 05:19:26,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,053 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 6 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 855 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-07-21 05:19:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2022-07-21 05:19:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 674 states have (on average 1.3872403560830862) internal successors, (935), 677 states have internal predecessors, (935), 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) [2022-07-21 05:19:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1183 transitions. [2022-07-21 05:19:26,098 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1183 transitions. Word has length 92 [2022-07-21 05:19:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,099 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1183 transitions. [2022-07-21 05:19:26,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1183 transitions. [2022-07-21 05:19:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 05:19:26,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:19:26,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 483840627, now seen corresponding path program 1 times [2022-07-21 05:19:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470537598] [2022-07-21 05:19:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:26,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470537598] [2022-07-21 05:19:26,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470537598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245128177] [2022-07-21 05:19:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,185 INFO L87 Difference]: Start difference. First operand 852 states and 1183 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,279 INFO L93 Difference]: Finished difference Result 1578 states and 2216 transitions. [2022-07-21 05:19:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-07-21 05:19:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,283 INFO L225 Difference]: With dead ends: 1578 [2022-07-21 05:19:26,283 INFO L226 Difference]: Without dead ends: 876 [2022-07-21 05:19:26,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,286 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 7 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 866 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-07-21 05:19:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-07-21 05:19:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 694 states have (on average 1.3760806916426513) internal successors, (955), 697 states have internal predecessors, (955), 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) [2022-07-21 05:19:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1203 transitions. [2022-07-21 05:19:26,321 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1203 transitions. Word has length 100 [2022-07-21 05:19:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,321 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1203 transitions. [2022-07-21 05:19:26,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1203 transitions. [2022-07-21 05:19:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 05:19:26,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:19:26,324 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1857958922, now seen corresponding path program 1 times [2022-07-21 05:19:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247450797] [2022-07-21 05:19:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:19:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247450797] [2022-07-21 05:19:26,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247450797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:26,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444267909] [2022-07-21 05:19:26,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:26,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:26,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:26,458 INFO L87 Difference]: Start difference. First operand 876 states and 1203 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:19:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,700 INFO L93 Difference]: Finished difference Result 2489 states and 3477 transitions. [2022-07-21 05:19:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-07-21 05:19:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,706 INFO L225 Difference]: With dead ends: 2489 [2022-07-21 05:19:26,707 INFO L226 Difference]: Without dead ends: 1763 [2022-07-21 05:19:26,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:26,709 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 392 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2305 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 [2022-07-21 05:19:26,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2305 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-07-21 05:19:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1160. [2022-07-21 05:19:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 905 states have (on average 1.3668508287292818) internal successors, (1237), 910 states have internal predecessors, (1237), 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) [2022-07-21 05:19:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1581 transitions. [2022-07-21 05:19:26,806 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1581 transitions. Word has length 103 [2022-07-21 05:19:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1581 transitions. [2022-07-21 05:19:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:19:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1581 transitions. [2022-07-21 05:19:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 05:19:26,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:19:26,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1544619372, now seen corresponding path program 1 times [2022-07-21 05:19:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880325945] [2022-07-21 05:19:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:19:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880325945] [2022-07-21 05:19:26,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880325945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092384810] [2022-07-21 05:19:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,870 INFO L87 Difference]: Start difference. First operand 1160 states and 1581 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:26,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,953 INFO L93 Difference]: Finished difference Result 2126 states and 2924 transitions. [2022-07-21 05:19:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:26,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-07-21 05:19:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,958 INFO L225 Difference]: With dead ends: 2126 [2022-07-21 05:19:26,958 INFO L226 Difference]: Without dead ends: 1184 [2022-07-21 05:19:26,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,962 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 5 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 864 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-07-21 05:19:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2022-07-21 05:19:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 923 states have (on average 1.3596966413867821) internal successors, (1255), 928 states have internal predecessors, (1255), 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) [2022-07-21 05:19:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1599 transitions. [2022-07-21 05:19:27,045 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1599 transitions. Word has length 107 [2022-07-21 05:19:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,045 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1599 transitions. [2022-07-21 05:19:27,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1599 transitions. [2022-07-21 05:19:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 05:19:27,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:19:27,046 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1746652564, now seen corresponding path program 1 times [2022-07-21 05:19:27,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534073568] [2022-07-21 05:19:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:19:27,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534073568] [2022-07-21 05:19:27,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534073568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:27,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:27,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:19:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845927710] [2022-07-21 05:19:27,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:19:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:19:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:27,129 INFO L87 Difference]: Start difference. First operand 1184 states and 1599 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,260 INFO L93 Difference]: Finished difference Result 1655 states and 2343 transitions. [2022-07-21 05:19:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-21 05:19:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,267 INFO L225 Difference]: With dead ends: 1655 [2022-07-21 05:19:27,267 INFO L226 Difference]: Without dead ends: 1653 [2022-07-21 05:19:27,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:27,269 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 261 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2251 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 [2022-07-21 05:19:27,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2251 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-07-21 05:19:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1192. [2022-07-21 05:19:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 927 states have (on average 1.3581445523193096) internal successors, (1259), 934 states have internal predecessors, (1259), 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) [2022-07-21 05:19:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1607 transitions. [2022-07-21 05:19:27,365 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1607 transitions. Word has length 106 [2022-07-21 05:19:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,365 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1607 transitions. [2022-07-21 05:19:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1607 transitions. [2022-07-21 05:19:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 05:19:27,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:19:27,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 285885957, now seen corresponding path program 1 times [2022-07-21 05:19:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630875689] [2022-07-21 05:19:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 05:19:27,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630875689] [2022-07-21 05:19:27,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630875689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:27,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:27,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:27,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769204095] [2022-07-21 05:19:27,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:27,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:27,437 INFO L87 Difference]: Start difference. First operand 1192 states and 1607 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:19:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,643 INFO L93 Difference]: Finished difference Result 2446 states and 3360 transitions. [2022-07-21 05:19:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:27,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-21 05:19:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,649 INFO L225 Difference]: With dead ends: 2446 [2022-07-21 05:19:27,649 INFO L226 Difference]: Without dead ends: 1554 [2022-07-21 05:19:27,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:27,651 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 524 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2264 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 [2022-07-21 05:19:27,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2264 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-07-21 05:19:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1236. [2022-07-21 05:19:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 982 states have (on average 1.3482688391038697) internal successors, (1324), 994 states have internal predecessors, (1324), 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) [2022-07-21 05:19:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1648 transitions. [2022-07-21 05:19:27,728 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1648 transitions. Word has length 109 [2022-07-21 05:19:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,729 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1648 transitions. [2022-07-21 05:19:27,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:19:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1648 transitions. [2022-07-21 05:19:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 05:19:27,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:19:27,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,731 INFO L85 PathProgramCache]: Analyzing trace with hash 641112124, now seen corresponding path program 1 times [2022-07-21 05:19:27,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196720437] [2022-07-21 05:19:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:19:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196720437] [2022-07-21 05:19:27,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196720437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:27,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:27,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485958558] [2022-07-21 05:19:27,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:27,825 INFO L87 Difference]: Start difference. First operand 1236 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:19:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:28,032 INFO L93 Difference]: Finished difference Result 2538 states and 3469 transitions. [2022-07-21 05:19:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:28,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-07-21 05:19:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:28,060 INFO L225 Difference]: With dead ends: 2538 [2022-07-21 05:19:28,060 INFO L226 Difference]: Without dead ends: 1582 [2022-07-21 05:19:28,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:28,063 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 396 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2414 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 [2022-07-21 05:19:28,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2414 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-07-21 05:19:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1123. [2022-07-21 05:19:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 896 states have (on average 1.3493303571428572) internal successors, (1209), 906 states have internal predecessors, (1209), 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) [2022-07-21 05:19:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1499 transitions. [2022-07-21 05:19:28,168 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1499 transitions. Word has length 111 [2022-07-21 05:19:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,169 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1499 transitions. [2022-07-21 05:19:28,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:19:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1499 transitions. [2022-07-21 05:19:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:19:28,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:28,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:19:28,171 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1939847605, now seen corresponding path program 1 times [2022-07-21 05:19:28,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:28,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976331652] [2022-07-21 05:19:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:19:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976331652] [2022-07-21 05:19:28,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976331652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:28,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:28,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 05:19:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463974372] [2022-07-21 05:19:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 05:19:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 05:19:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:28,302 INFO L87 Difference]: Start difference. First operand 1123 states and 1499 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:19:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:28,876 INFO L93 Difference]: Finished difference Result 2606 states and 3573 transitions. [2022-07-21 05:19:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:19:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-07-21 05:19:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:28,883 INFO L225 Difference]: With dead ends: 2606 [2022-07-21 05:19:28,883 INFO L226 Difference]: Without dead ends: 1683 [2022-07-21 05:19:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:28,886 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1047 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:28,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 2152 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:19:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-07-21 05:19:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1139. [2022-07-21 05:19:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 904 states have (on average 1.329646017699115) internal successors, (1202), 915 states have internal predecessors, (1202), 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) [2022-07-21 05:19:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1498 transitions. [2022-07-21 05:19:28,980 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1498 transitions. Word has length 112 [2022-07-21 05:19:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,981 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1498 transitions. [2022-07-21 05:19:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:19:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1498 transitions. [2022-07-21 05:19:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:19:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 05:19:28,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash 889695918, now seen corresponding path program 1 times [2022-07-21 05:19:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696663779] [2022-07-21 05:19:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:29,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696663779] [2022-07-21 05:19:29,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696663779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:29,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:29,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139195711] [2022-07-21 05:19:29,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:29,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:29,038 INFO L87 Difference]: Start difference. First operand 1139 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:29,284 INFO L93 Difference]: Finished difference Result 3175 states and 4263 transitions. [2022-07-21 05:19:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-07-21 05:19:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:29,292 INFO L225 Difference]: With dead ends: 3175 [2022-07-21 05:19:29,292 INFO L226 Difference]: Without dead ends: 2287 [2022-07-21 05:19:29,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:29,295 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 437 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1223 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 [2022-07-21 05:19:29,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1223 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2022-07-21 05:19:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1935. [2022-07-21 05:19:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1510 states have (on average 1.3271523178807947) internal successors, (2004), 1529 states have internal predecessors, (2004), 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) [2022-07-21 05:19:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2548 transitions. [2022-07-21 05:19:29,452 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2548 transitions. Word has length 112 [2022-07-21 05:19:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:29,452 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 2548 transitions. [2022-07-21 05:19:29,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2548 transitions. [2022-07-21 05:19:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 05:19:29,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:29,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:29,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 05:19:29,454 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1041296419, now seen corresponding path program 1 times [2022-07-21 05:19:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:29,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339081858] [2022-07-21 05:19:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:29,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:19:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:29,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339081858] [2022-07-21 05:19:29,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339081858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:29,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:29,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816214311] [2022-07-21 05:19:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:29,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:29,543 INFO L87 Difference]: Start difference. First operand 1935 states and 2548 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:30,164 INFO L93 Difference]: Finished difference Result 4386 states and 5918 transitions. [2022-07-21 05:19:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:19:30,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-07-21 05:19:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:30,173 INFO L225 Difference]: With dead ends: 4386 [2022-07-21 05:19:30,174 INFO L226 Difference]: Without dead ends: 2800 [2022-07-21 05:19:30,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:30,177 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 802 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:30,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2505 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:19:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2022-07-21 05:19:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1954. [2022-07-21 05:19:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1516 states have (on average 1.3232189973614776) internal successors, (2006), 1536 states have internal predecessors, (2006), 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) [2022-07-21 05:19:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2566 transitions. [2022-07-21 05:19:30,365 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2566 transitions. Word has length 114 [2022-07-21 05:19:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 2566 transitions. [2022-07-21 05:19:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2566 transitions. [2022-07-21 05:19:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:30,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:30,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:30,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 05:19:30,368 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1708808100, now seen corresponding path program 1 times [2022-07-21 05:19:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:30,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118376430] [2022-07-21 05:19:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 05:19:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:30,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118376430] [2022-07-21 05:19:30,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118376430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:30,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:30,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334571171] [2022-07-21 05:19:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:30,442 INFO L87 Difference]: Start difference. First operand 1954 states and 2566 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:31,166 INFO L93 Difference]: Finished difference Result 5154 states and 6849 transitions. [2022-07-21 05:19:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:31,198 INFO L225 Difference]: With dead ends: 5154 [2022-07-21 05:19:31,199 INFO L226 Difference]: Without dead ends: 3584 [2022-07-21 05:19:31,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:31,205 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 484 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:31,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1287 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:19:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2022-07-21 05:19:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3015. [2022-07-21 05:19:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2302 states have (on average 1.3192875760208513) internal successors, (3037), 2333 states have internal predecessors, (3037), 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) [2022-07-21 05:19:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3957 transitions. [2022-07-21 05:19:31,522 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3957 transitions. Word has length 115 [2022-07-21 05:19:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:31,523 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 3957 transitions. [2022-07-21 05:19:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3957 transitions. [2022-07-21 05:19:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:31,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:31,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:31,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 05:19:31,526 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1228455916, now seen corresponding path program 1 times [2022-07-21 05:19:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:31,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873901829] [2022-07-21 05:19:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:31,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873901829] [2022-07-21 05:19:31,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873901829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:31,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:31,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:31,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823296780] [2022-07-21 05:19:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:31,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:31,584 INFO L87 Difference]: Start difference. First operand 3015 states and 3957 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:32,028 INFO L93 Difference]: Finished difference Result 7127 states and 9424 transitions. [2022-07-21 05:19:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:32,039 INFO L225 Difference]: With dead ends: 7127 [2022-07-21 05:19:32,039 INFO L226 Difference]: Without dead ends: 4626 [2022-07-21 05:19:32,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:32,044 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 431 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1283 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 [2022-07-21 05:19:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1283 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-07-21 05:19:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4292. [2022-07-21 05:19:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 3255 states have (on average 1.3170506912442397) internal successors, (4287), 3299 states have internal predecessors, (4287), 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) [2022-07-21 05:19:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 5631 transitions. [2022-07-21 05:19:32,338 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 5631 transitions. Word has length 115 [2022-07-21 05:19:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:32,338 INFO L495 AbstractCegarLoop]: Abstraction has 4292 states and 5631 transitions. [2022-07-21 05:19:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 5631 transitions. [2022-07-21 05:19:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 05:19:32,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:32,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:32,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 05:19:32,341 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 331094376, now seen corresponding path program 1 times [2022-07-21 05:19:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459443671] [2022-07-21 05:19:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:32,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:32,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459443671] [2022-07-21 05:19:32,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459443671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:32,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:32,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400917626] [2022-07-21 05:19:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:32,372 INFO L87 Difference]: Start difference. First operand 4292 states and 5631 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) [2022-07-21 05:19:32,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:32,885 INFO L93 Difference]: Finished difference Result 9705 states and 13179 transitions. [2022-07-21 05:19:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:32,885 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 [2022-07-21 05:19:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:32,900 INFO L225 Difference]: With dead ends: 9705 [2022-07-21 05:19:32,900 INFO L226 Difference]: Without dead ends: 5818 [2022-07-21 05:19:32,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:32,911 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 151 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 703 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 [2022-07-21 05:19:32,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 703 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2022-07-21 05:19:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 4298. [2022-07-21 05:19:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 3261 states have (on average 1.3164673413063477) internal successors, (4293), 3305 states have internal predecessors, (4293), 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) [2022-07-21 05:19:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 5637 transitions. [2022-07-21 05:19:33,359 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 5637 transitions. Word has length 116 [2022-07-21 05:19:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:33,359 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 5637 transitions. [2022-07-21 05:19:33,359 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) [2022-07-21 05:19:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 5637 transitions. [2022-07-21 05:19:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 05:19:33,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:33,361 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] [2022-07-21 05:19:33,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 05:19:33,361 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1590062833, now seen corresponding path program 1 times [2022-07-21 05:19:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:33,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112174477] [2022-07-21 05:19:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:33,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:33,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112174477] [2022-07-21 05:19:33,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112174477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:33,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:33,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635859999] [2022-07-21 05:19:33,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:33,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:33,426 INFO L87 Difference]: Start difference. First operand 4298 states and 5637 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) [2022-07-21 05:19:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:33,873 INFO L93 Difference]: Finished difference Result 9003 states and 12067 transitions. [2022-07-21 05:19:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:33,873 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 [2022-07-21 05:19:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:33,884 INFO L225 Difference]: With dead ends: 9003 [2022-07-21 05:19:33,884 INFO L226 Difference]: Without dead ends: 4802 [2022-07-21 05:19:33,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:33,891 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 369 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 881 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 [2022-07-21 05:19:33,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 881 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-07-21 05:19:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 3865. [2022-07-21 05:19:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 2911 states have (on average 1.3229130882858124) internal successors, (3851), 2945 states have internal predecessors, (3851), 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) [2022-07-21 05:19:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 5091 transitions. [2022-07-21 05:19:34,202 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 5091 transitions. Word has length 117 [2022-07-21 05:19:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:34,202 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 5091 transitions. [2022-07-21 05:19:34,205 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) [2022-07-21 05:19:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 5091 transitions. [2022-07-21 05:19:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:34,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:34,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:34,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 05:19:34,206 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1465420109, now seen corresponding path program 1 times [2022-07-21 05:19:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:34,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137133763] [2022-07-21 05:19:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:34,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137133763] [2022-07-21 05:19:34,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137133763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:34,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:34,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603544289] [2022-07-21 05:19:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:34,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:34,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:34,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:34,255 INFO L87 Difference]: Start difference. First operand 3865 states and 5091 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:34,699 INFO L93 Difference]: Finished difference Result 8503 states and 11497 transitions. [2022-07-21 05:19:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:34,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:34,711 INFO L225 Difference]: With dead ends: 8503 [2022-07-21 05:19:34,711 INFO L226 Difference]: Without dead ends: 4851 [2022-07-21 05:19:34,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:34,718 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 151 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:34,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 680 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2022-07-21 05:19:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 3875. [2022-07-21 05:19:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 2921 states have (on average 1.3218076001369394) internal successors, (3861), 2955 states have internal predecessors, (3861), 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) [2022-07-21 05:19:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 5101 transitions. [2022-07-21 05:19:35,045 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 5101 transitions. Word has length 118 [2022-07-21 05:19:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:35,045 INFO L495 AbstractCegarLoop]: Abstraction has 3875 states and 5101 transitions. [2022-07-21 05:19:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 5101 transitions. [2022-07-21 05:19:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:35,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:35,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:35,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 05:19:35,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -132784146, now seen corresponding path program 1 times [2022-07-21 05:19:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:35,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518183057] [2022-07-21 05:19:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:35,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:35,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518183057] [2022-07-21 05:19:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518183057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506382824] [2022-07-21 05:19:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:35,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:35,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:35,109 INFO L87 Difference]: Start difference. First operand 3875 states and 5101 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:35,471 INFO L93 Difference]: Finished difference Result 8451 states and 11414 transitions. [2022-07-21 05:19:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:35,481 INFO L225 Difference]: With dead ends: 8451 [2022-07-21 05:19:35,481 INFO L226 Difference]: Without dead ends: 4722 [2022-07-21 05:19:35,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:35,488 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 284 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:35,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 912 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2022-07-21 05:19:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 2925. [2022-07-21 05:19:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2205 states have (on average 1.3133786848072562) internal successors, (2896), 2224 states have internal predecessors, (2896), 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) [2022-07-21 05:19:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3834 transitions. [2022-07-21 05:19:35,815 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3834 transitions. Word has length 118 [2022-07-21 05:19:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:35,816 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 3834 transitions. [2022-07-21 05:19:35,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3834 transitions. [2022-07-21 05:19:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 05:19:35,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:35,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:35,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 05:19:35,820 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:35,821 INFO L85 PathProgramCache]: Analyzing trace with hash -664741411, now seen corresponding path program 1 times [2022-07-21 05:19:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:35,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579043385] [2022-07-21 05:19:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 05:19:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 05:19:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 05:19:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:19:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:19:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 05:19:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:35,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579043385] [2022-07-21 05:19:35,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579043385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:35,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175691900] [2022-07-21 05:19:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:35,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:36,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:19:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:19:36,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 05:19:36,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 05:19:36,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175691900] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:36,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:36,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:19:36,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164456863] [2022-07-21 05:19:36,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:36,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:19:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:36,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:19:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:36,596 INFO L87 Difference]: Start difference. First operand 2925 states and 3834 transitions. Second operand has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:39,849 INFO L93 Difference]: Finished difference Result 9990 states and 13988 transitions. [2022-07-21 05:19:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:19:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 185 [2022-07-21 05:19:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:39,870 INFO L225 Difference]: With dead ends: 9990 [2022-07-21 05:19:39,870 INFO L226 Difference]: Without dead ends: 7352 [2022-07-21 05:19:39,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:19:39,878 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 4455 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:39,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4455 Valid, 3273 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:19:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-07-21 05:19:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 3449. [2022-07-21 05:19:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2622 states have (on average 1.3093058733790999) internal successors, (3433), 2642 states have internal predecessors, (3433), 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) [2022-07-21 05:19:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4495 transitions. [2022-07-21 05:19:40,289 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4495 transitions. Word has length 185 [2022-07-21 05:19:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:40,289 INFO L495 AbstractCegarLoop]: Abstraction has 3449 states and 4495 transitions. [2022-07-21 05:19:40,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.714285714285715) internal successors, (262), 13 states have internal predecessors, (262), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4495 transitions. [2022-07-21 05:19:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 05:19:40,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:40,294 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] [2022-07-21 05:19:40,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 05:19:40,507 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 [2022-07-21 05:19:40,508 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash 782511274, now seen corresponding path program 1 times [2022-07-21 05:19:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:40,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036516660] [2022-07-21 05:19:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:40,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 05:19:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 05:19:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 05:19:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:19:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:19:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:19:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 05:19:40,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:40,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036516660] [2022-07-21 05:19:40,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036516660] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:40,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271742839] [2022-07-21 05:19:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:40,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:40,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:40,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:40,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:19:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:41,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 05:19:41,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271742839] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:41,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:41,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-21 05:19:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920468083] [2022-07-21 05:19:41,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:41,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 05:19:41,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 05:19:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:19:41,198 INFO L87 Difference]: Start difference. First operand 3449 states and 4495 transitions. Second operand has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-07-21 05:19:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:48,835 INFO L93 Difference]: Finished difference Result 17499 states and 23924 transitions. [2022-07-21 05:19:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-07-21 05:19:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 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 193 [2022-07-21 05:19:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:48,940 INFO L225 Difference]: With dead ends: 17499 [2022-07-21 05:19:48,941 INFO L226 Difference]: Without dead ends: 14346 [2022-07-21 05:19:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-07-21 05:19:48,952 INFO L413 NwaCegarLoop]: 1822 mSDtfsCounter, 7160 mSDsluCounter, 13743 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 4426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7160 SdHoareTripleChecker+Valid, 15565 SdHoareTripleChecker+Invalid, 9880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4426 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:48,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7160 Valid, 15565 Invalid, 9880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4426 Valid, 5454 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 05:19:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14346 states. [2022-07-21 05:19:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14346 to 6315. [2022-07-21 05:19:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 4771 states have (on average 1.3114651016558374) internal successors, (6257), 4809 states have internal predecessors, (6257), 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) [2022-07-21 05:19:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 8241 transitions. [2022-07-21 05:19:49,650 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 8241 transitions. Word has length 193 [2022-07-21 05:19:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:49,652 INFO L495 AbstractCegarLoop]: Abstraction has 6315 states and 8241 transitions. [2022-07-21 05:19:49,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 14 states have internal predecessors, (264), 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) [2022-07-21 05:19:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 8241 transitions. [2022-07-21 05:19:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-21 05:19:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:49,662 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] [2022-07-21 05:19:49,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:49,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 05:19:49,889 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -579946063, now seen corresponding path program 1 times [2022-07-21 05:19:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:49,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600167975] [2022-07-21 05:19:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:19:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 05:19:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:19:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 05:19:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:19:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 05:19:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 05:19:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600167975] [2022-07-21 05:19:49,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600167975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:49,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:49,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791967820] [2022-07-21 05:19:49,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:49,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:49,970 INFO L87 Difference]: Start difference. First operand 6315 states and 8241 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:52,096 INFO L93 Difference]: Finished difference Result 21323 states and 28571 transitions. [2022-07-21 05:19:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:19:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 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 195 [2022-07-21 05:19:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:52,156 INFO L225 Difference]: With dead ends: 21323 [2022-07-21 05:19:52,156 INFO L226 Difference]: Without dead ends: 15366 [2022-07-21 05:19:52,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:52,169 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 811 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 3082 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 [2022-07-21 05:19:52,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 3082 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2022-07-21 05:19:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 8157. [2022-07-21 05:19:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8157 states, 6101 states have (on average 1.3088018357646287) internal successors, (7985), 6152 states have internal predecessors, (7985), 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) [2022-07-21 05:19:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8157 states to 8157 states and 10655 transitions. [2022-07-21 05:19:53,471 INFO L78 Accepts]: Start accepts. Automaton has 8157 states and 10655 transitions. Word has length 195 [2022-07-21 05:19:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:53,472 INFO L495 AbstractCegarLoop]: Abstraction has 8157 states and 10655 transitions. [2022-07-21 05:19:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8157 states and 10655 transitions. [2022-07-21 05:19:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 05:19:53,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:53,485 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] [2022-07-21 05:19:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 05:19:53,486 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1014240118, now seen corresponding path program 1 times [2022-07-21 05:19:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:53,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041508404] [2022-07-21 05:19:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:19:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:19:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:19:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:19:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041508404] [2022-07-21 05:19:53,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041508404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928713716] [2022-07-21 05:19:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:53,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:53,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:53,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:53,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:19:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:53,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 05:19:53,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 05:19:53,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 05:19:53,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928713716] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:53,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:19:53,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-07-21 05:19:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107208861] [2022-07-21 05:19:53,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:53,931 INFO L87 Difference]: Start difference. First operand 8157 states and 10655 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 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) [2022-07-21 05:19:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:54,751 INFO L93 Difference]: Finished difference Result 13437 states and 17606 transitions. [2022-07-21 05:19:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 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 197 [2022-07-21 05:19:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:54,769 INFO L225 Difference]: With dead ends: 13437 [2022-07-21 05:19:54,770 INFO L226 Difference]: Without dead ends: 5486 [2022-07-21 05:19:54,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:54,779 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:54,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1155 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2022-07-21 05:19:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5486. [2022-07-21 05:19:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 4104 states have (on average 1.3082358674463939) internal successors, (5369), 4138 states have internal predecessors, (5369), 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) [2022-07-21 05:19:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7171 transitions. [2022-07-21 05:19:55,476 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7171 transitions. Word has length 197 [2022-07-21 05:19:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:55,476 INFO L495 AbstractCegarLoop]: Abstraction has 5486 states and 7171 transitions. [2022-07-21 05:19:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 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) [2022-07-21 05:19:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7171 transitions. [2022-07-21 05:19:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 05:19:55,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:55,485 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] [2022-07-21 05:19:55,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:55,698 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1806123049, now seen corresponding path program 1 times [2022-07-21 05:19:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:55,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535774963] [2022-07-21 05:19:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:19:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:19:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:19:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:19:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:19:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:19:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:55,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:55,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535774963] [2022-07-21 05:19:55,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535774963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:55,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002271508] [2022-07-21 05:19:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:55,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:55,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:55,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:55,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:19:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:56,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:56,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002271508] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:56,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:56,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-07-21 05:19:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146417768] [2022-07-21 05:19:56,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 05:19:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 05:19:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-07-21 05:19:56,706 INFO L87 Difference]: Start difference. First operand 5486 states and 7171 transitions. Second operand has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 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) [2022-07-21 05:20:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:11,624 INFO L93 Difference]: Finished difference Result 28569 states and 40063 transitions. [2022-07-21 05:20:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-07-21 05:20:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 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 197 [2022-07-21 05:20:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:11,677 INFO L225 Difference]: With dead ends: 28569 [2022-07-21 05:20:11,677 INFO L226 Difference]: Without dead ends: 23367 [2022-07-21 05:20:11,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26384 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6223, Invalid=57029, Unknown=0, NotChecked=0, Total=63252 [2022-07-21 05:20:11,698 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 9301 mSDsluCounter, 7978 mSDsCounter, 0 mSdLazyCounter, 12855 mSolverCounterSat, 4404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9301 SdHoareTripleChecker+Valid, 8682 SdHoareTripleChecker+Invalid, 17259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4404 IncrementalHoareTripleChecker+Valid, 12855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:11,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9301 Valid, 8682 Invalid, 17259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4404 Valid, 12855 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 05:20:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23367 states. [2022-07-21 05:20:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23367 to 11873. [2022-07-21 05:20:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11873 states, 8944 states have (on average 1.3064624329159213) internal successors, (11685), 9014 states have internal predecessors, (11685), 1889 states have call successors, (1889), 1039 states have call predecessors, (1889), 1039 states have return successors, (1889), 1819 states have call predecessors, (1889), 1889 states have call successors, (1889) [2022-07-21 05:20:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11873 states to 11873 states and 15463 transitions. [2022-07-21 05:20:13,233 INFO L78 Accepts]: Start accepts. Automaton has 11873 states and 15463 transitions. Word has length 197 [2022-07-21 05:20:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:13,234 INFO L495 AbstractCegarLoop]: Abstraction has 11873 states and 15463 transitions. [2022-07-21 05:20:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 24 states have internal predecessors, (342), 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) [2022-07-21 05:20:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11873 states and 15463 transitions. [2022-07-21 05:20:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 05:20:13,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:13,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:13,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:13,464 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2096530114, now seen corresponding path program 1 times [2022-07-21 05:20:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751281687] [2022-07-21 05:20:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:20:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:20:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:20:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:20:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:20:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:20:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:20:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:20:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:20:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 05:20:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:13,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751281687] [2022-07-21 05:20:13,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751281687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:13,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:13,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:20:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244823487] [2022-07-21 05:20:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:13,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:20:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:20:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:20:13,539 INFO L87 Difference]: Start difference. First operand 11873 states and 15463 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 05:20:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:14,858 INFO L93 Difference]: Finished difference Result 22733 states and 29699 transitions. [2022-07-21 05:20:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:20:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 197 [2022-07-21 05:20:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:14,881 INFO L225 Difference]: With dead ends: 22733 [2022-07-21 05:20:14,882 INFO L226 Difference]: Without dead ends: 11127 [2022-07-21 05:20:14,897 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 [2022-07-21 05:20:14,898 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 449 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:14,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 475 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2022-07-21 05:20:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 11125. [2022-07-21 05:20:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 8388 states have (on average 1.308416785884597) internal successors, (10975), 8454 states have internal predecessors, (10975), 1767 states have call successors, (1767), 969 states have call predecessors, (1767), 969 states have return successors, (1767), 1701 states have call predecessors, (1767), 1767 states have call successors, (1767) [2022-07-21 05:20:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 14509 transitions. [2022-07-21 05:20:16,455 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 14509 transitions. Word has length 197 [2022-07-21 05:20:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:16,455 INFO L495 AbstractCegarLoop]: Abstraction has 11125 states and 14509 transitions. [2022-07-21 05:20:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 05:20:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 14509 transitions. [2022-07-21 05:20:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-21 05:20:16,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:16,467 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] [2022-07-21 05:20:16,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 05:20:16,467 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:16,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1193102570, now seen corresponding path program 1 times [2022-07-21 05:20:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:16,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127627054] [2022-07-21 05:20:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:20:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:20:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:20:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:20:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:20:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:20:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:20:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:20:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:20:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:20:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127627054] [2022-07-21 05:20:16,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127627054] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757481019] [2022-07-21 05:20:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:16,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:16,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:16,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:20:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:16,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 05:20:16,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:20:16,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:20:17,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757481019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:17,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:17,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-21 05:20:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8876809] [2022-07-21 05:20:17,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:20:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:20:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:20:17,008 INFO L87 Difference]: Start difference. First operand 11125 states and 14509 transitions. Second operand has 17 states, 17 states have (on average 15.117647058823529) internal successors, (257), 16 states have internal predecessors, (257), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:20:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:24,490 INFO L93 Difference]: Finished difference Result 34382 states and 47559 transitions. [2022-07-21 05:20:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-21 05:20:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.117647058823529) internal successors, (257), 16 states have internal predecessors, (257), 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 198 [2022-07-21 05:20:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:24,541 INFO L225 Difference]: With dead ends: 34382 [2022-07-21 05:20:24,542 INFO L226 Difference]: Without dead ends: 23563 [2022-07-21 05:20:24,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=886, Invalid=5594, Unknown=0, NotChecked=0, Total=6480 [2022-07-21 05:20:24,557 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 3541 mSDsluCounter, 6698 mSDsCounter, 0 mSdLazyCounter, 5668 mSolverCounterSat, 1858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 7526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1858 IncrementalHoareTripleChecker+Valid, 5668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:24,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 7336 Invalid, 7526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1858 Valid, 5668 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 05:20:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23563 states. [2022-07-21 05:20:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23563 to 12473. [2022-07-21 05:20:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12473 states, 9416 states have (on average 1.304269328802039) internal successors, (12281), 9490 states have internal predecessors, (12281), 1967 states have call successors, (1967), 1089 states have call predecessors, (1967), 1089 states have return successors, (1967), 1893 states have call predecessors, (1967), 1967 states have call successors, (1967) [2022-07-21 05:20:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12473 states to 12473 states and 16215 transitions. [2022-07-21 05:20:26,335 INFO L78 Accepts]: Start accepts. Automaton has 12473 states and 16215 transitions. Word has length 198 [2022-07-21 05:20:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:26,335 INFO L495 AbstractCegarLoop]: Abstraction has 12473 states and 16215 transitions. [2022-07-21 05:20:26,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.117647058823529) internal successors, (257), 16 states have internal predecessors, (257), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:20:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 12473 states and 16215 transitions. [2022-07-21 05:20:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 05:20:26,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:26,348 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] [2022-07-21 05:20:26,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:26,561 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 [2022-07-21 05:20:26,562 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash -679576872, now seen corresponding path program 1 times [2022-07-21 05:20:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:26,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963427124] [2022-07-21 05:20:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:26,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:20:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:20:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:20:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:20:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 05:20:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:20:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:20:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:20:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:20:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:20:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:26,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963427124] [2022-07-21 05:20:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963427124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:20:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586075328] [2022-07-21 05:20:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:20:26,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:20:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:20:26,608 INFO L87 Difference]: Start difference. First operand 12473 states and 16215 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-21 05:20:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:28,182 INFO L93 Difference]: Finished difference Result 24021 states and 31326 transitions. [2022-07-21 05:20:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:20:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 206 [2022-07-21 05:20:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:28,208 INFO L225 Difference]: With dead ends: 24021 [2022-07-21 05:20:28,210 INFO L226 Difference]: Without dead ends: 11817 [2022-07-21 05:20:28,229 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 [2022-07-21 05:20:28,230 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 234 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 454 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2022-07-21 05:20:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 11785. [2022-07-21 05:20:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11785 states, 8920 states have (on average 1.303811659192825) internal successors, (11630), 8990 states have internal predecessors, (11630), 1845 states have call successors, (1845), 1019 states have call predecessors, (1845), 1019 states have return successors, (1845), 1775 states have call predecessors, (1845), 1845 states have call successors, (1845) [2022-07-21 05:20:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11785 states to 11785 states and 15320 transitions. [2022-07-21 05:20:29,847 INFO L78 Accepts]: Start accepts. Automaton has 11785 states and 15320 transitions. Word has length 206 [2022-07-21 05:20:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:29,847 INFO L495 AbstractCegarLoop]: Abstraction has 11785 states and 15320 transitions. [2022-07-21 05:20:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-21 05:20:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11785 states and 15320 transitions. [2022-07-21 05:20:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 05:20:29,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:29,860 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] [2022-07-21 05:20:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 05:20:29,860 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash -999010550, now seen corresponding path program 1 times [2022-07-21 05:20:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895336047] [2022-07-21 05:20:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:20:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:20:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:20:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:20:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 05:20:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 05:20:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:20:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:20:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:20:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:20:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 05:20:29,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:29,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895336047] [2022-07-21 05:20:29,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895336047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:29,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477132836] [2022-07-21 05:20:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:29,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:29,940 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:29,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:20:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 05:20:30,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 8 proven. 115 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 05:20:30,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 05:20:30,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477132836] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:30,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:30,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-21 05:20:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295715824] [2022-07-21 05:20:30,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:20:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:20:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:20:30,507 INFO L87 Difference]: Start difference. First operand 11785 states and 15320 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 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) [2022-07-21 05:20:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:34,488 INFO L93 Difference]: Finished difference Result 36730 states and 47908 transitions. [2022-07-21 05:20:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 05:20:34,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 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 207 [2022-07-21 05:20:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:34,533 INFO L225 Difference]: With dead ends: 36730 [2022-07-21 05:20:34,534 INFO L226 Difference]: Without dead ends: 25380 [2022-07-21 05:20:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 445 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-21 05:20:34,550 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 779 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:34,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 2962 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25380 states. [2022-07-21 05:20:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25380 to 18325. [2022-07-21 05:20:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18325 states, 13994 states have (on average 1.2876947263112763) internal successors, (18020), 14123 states have internal predecessors, (18020), 2752 states have call successors, (2752), 1578 states have call predecessors, (2752), 1578 states have return successors, (2752), 2623 states have call predecessors, (2752), 2752 states have call successors, (2752) [2022-07-21 05:20:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18325 states to 18325 states and 23524 transitions. [2022-07-21 05:20:37,046 INFO L78 Accepts]: Start accepts. Automaton has 18325 states and 23524 transitions. Word has length 207 [2022-07-21 05:20:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:37,047 INFO L495 AbstractCegarLoop]: Abstraction has 18325 states and 23524 transitions. [2022-07-21 05:20:37,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 9 states have internal predecessors, (187), 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) [2022-07-21 05:20:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 18325 states and 23524 transitions. [2022-07-21 05:20:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 05:20:37,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:37,056 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] [2022-07-21 05:20:37,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:37,273 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 [2022-07-21 05:20:37,273 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 261492107, now seen corresponding path program 1 times [2022-07-21 05:20:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302656868] [2022-07-21 05:20:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:20:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:20:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:20:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:20:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 05:20:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:20:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:20:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:20:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302656868] [2022-07-21 05:20:37,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302656868] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504811907] [2022-07-21 05:20:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:37,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:37,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:37,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:37,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:20:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:37,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:20:37,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:20:37,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:20:37,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504811907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:37,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:37,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-21 05:20:37,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523329651] [2022-07-21 05:20:37,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:37,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 05:20:37,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 05:20:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 05:20:37,791 INFO L87 Difference]: Start difference. First operand 18325 states and 23524 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 8 states have internal predecessors, (182), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:20:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:41,728 INFO L93 Difference]: Finished difference Result 42775 states and 56777 transitions. [2022-07-21 05:20:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:20:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 8 states have internal predecessors, (182), 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 207 [2022-07-21 05:20:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:41,775 INFO L225 Difference]: With dead ends: 42775 [2022-07-21 05:20:41,775 INFO L226 Difference]: Without dead ends: 24756 [2022-07-21 05:20:41,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:20:41,792 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 281 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2283 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 [2022-07-21 05:20:41,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 2283 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24756 states. [2022-07-21 05:20:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24756 to 18325. [2022-07-21 05:20:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18325 states, 13994 states have (on average 1.287337430327283) internal successors, (18015), 14123 states have internal predecessors, (18015), 2752 states have call successors, (2752), 1578 states have call predecessors, (2752), 1578 states have return successors, (2752), 2623 states have call predecessors, (2752), 2752 states have call successors, (2752) [2022-07-21 05:20:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18325 states to 18325 states and 23519 transitions. [2022-07-21 05:20:44,638 INFO L78 Accepts]: Start accepts. Automaton has 18325 states and 23519 transitions. Word has length 207 [2022-07-21 05:20:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:44,639 INFO L495 AbstractCegarLoop]: Abstraction has 18325 states and 23519 transitions. [2022-07-21 05:20:44,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 8 states have internal predecessors, (182), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:20:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 18325 states and 23519 transitions. [2022-07-21 05:20:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 05:20:44,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:44,648 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:44,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:44,863 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 [2022-07-21 05:20:44,864 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash -148674929, now seen corresponding path program 1 times [2022-07-21 05:20:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:44,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820930739] [2022-07-21 05:20:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:20:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:20:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:20:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 05:20:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:45,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820930739] [2022-07-21 05:20:45,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820930739] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791049019] [2022-07-21 05:20:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:45,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:45,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:45,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:20:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:45,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 05:20:45,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:46,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:46,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791049019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:46,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:46,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 10] total 22 [2022-07-21 05:20:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018160990] [2022-07-21 05:20:46,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 05:20:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 05:20:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:20:46,641 INFO L87 Difference]: Start difference. First operand 18325 states and 23519 transitions. Second operand has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:54,288 INFO L93 Difference]: Finished difference Result 43825 states and 58510 transitions. [2022-07-21 05:20:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 05:20:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 214 [2022-07-21 05:20:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:54,399 INFO L225 Difference]: With dead ends: 43825 [2022-07-21 05:20:54,399 INFO L226 Difference]: Without dead ends: 29125 [2022-07-21 05:20:54,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1907, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 05:20:54,420 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 6733 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 2781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6734 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2781 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:54,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6734 Valid, 3125 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2781 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 05:20:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29125 states. [2022-07-21 05:20:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29125 to 14875. [2022-07-21 05:20:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14875 states, 11277 states have (on average 1.2813691584641305) internal successors, (14450), 11385 states have internal predecessors, (14450), 2308 states have call successors, (2308), 1289 states have call predecessors, (2308), 1289 states have return successors, (2308), 2200 states have call predecessors, (2308), 2308 states have call successors, (2308) [2022-07-21 05:20:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14875 states to 14875 states and 19066 transitions. [2022-07-21 05:20:56,676 INFO L78 Accepts]: Start accepts. Automaton has 14875 states and 19066 transitions. Word has length 214 [2022-07-21 05:20:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:56,676 INFO L495 AbstractCegarLoop]: Abstraction has 14875 states and 19066 transitions. [2022-07-21 05:20:56,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.818181818181817) internal successors, (370), 22 states have internal predecessors, (370), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 14875 states and 19066 transitions. [2022-07-21 05:20:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:20:56,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:56,685 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:56,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:56,902 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 [2022-07-21 05:20:56,903 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1038689630, now seen corresponding path program 1 times [2022-07-21 05:20:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:56,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76020135] [2022-07-21 05:20:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:20:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:56,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76020135] [2022-07-21 05:20:56,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76020135] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001276156] [2022-07-21 05:20:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:56,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:56,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:56,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:57,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:20:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:57,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 05:20:57,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:57,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001276156] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:57,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:57,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-21 05:20:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344946524] [2022-07-21 05:20:57,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:20:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:20:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:20:57,576 INFO L87 Difference]: Start difference. First operand 14875 states and 19066 transitions. Second operand has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:21:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:05,580 INFO L93 Difference]: Finished difference Result 47041 states and 63502 transitions. [2022-07-21 05:21:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-21 05:21:05,581 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 215 [2022-07-21 05:21:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:05,657 INFO L225 Difference]: With dead ends: 47041 [2022-07-21 05:21:05,658 INFO L226 Difference]: Without dead ends: 33867 [2022-07-21 05:21:05,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-21 05:21:05,680 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 2310 mSDsluCounter, 6882 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2410 Valid, 7861 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:21:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33867 states. [2022-07-21 05:21:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33867 to 19644. [2022-07-21 05:21:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19644 states, 15082 states have (on average 1.2717146267073332) internal successors, (19180), 15215 states have internal predecessors, (19180), 2885 states have call successors, (2885), 1676 states have call predecessors, (2885), 1676 states have return successors, (2885), 2752 states have call predecessors, (2885), 2885 states have call successors, (2885) [2022-07-21 05:21:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19644 states to 19644 states and 24950 transitions. [2022-07-21 05:21:09,181 INFO L78 Accepts]: Start accepts. Automaton has 19644 states and 24950 transitions. Word has length 215 [2022-07-21 05:21:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:09,181 INFO L495 AbstractCegarLoop]: Abstraction has 19644 states and 24950 transitions. [2022-07-21 05:21:09,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:21:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 19644 states and 24950 transitions. [2022-07-21 05:21:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:21:09,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:09,192 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:09,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:09,395 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 [2022-07-21 05:21:09,396 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash -390096860, now seen corresponding path program 1 times [2022-07-21 05:21:09,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152302550] [2022-07-21 05:21:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:09,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:21:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:21:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:21:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:21:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:21:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:21:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-21 05:21:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152302550] [2022-07-21 05:21:09,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152302550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:09,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:09,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:21:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866630767] [2022-07-21 05:21:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:21:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:21:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:21:09,466 INFO L87 Difference]: Start difference. First operand 19644 states and 24950 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:21:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:11,751 INFO L93 Difference]: Finished difference Result 33015 states and 42131 transitions. [2022-07-21 05:21:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:21:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 215 [2022-07-21 05:21:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:11,783 INFO L225 Difference]: With dead ends: 33015 [2022-07-21 05:21:11,784 INFO L226 Difference]: Without dead ends: 14409 [2022-07-21 05:21:11,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:21:11,804 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 238 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 486 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 [2022-07-21 05:21:11,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 486 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:21:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14409 states. [2022-07-21 05:21:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14409 to 14366. [2022-07-21 05:21:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 11123 states have (on average 1.2738469837274116) internal successors, (14169), 11211 states have internal predecessors, (14169), 2049 states have call successors, (2049), 1193 states have call predecessors, (2049), 1193 states have return successors, (2049), 1961 states have call predecessors, (2049), 2049 states have call successors, (2049) [2022-07-21 05:21:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 18267 transitions. [2022-07-21 05:21:14,116 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 18267 transitions. Word has length 215 [2022-07-21 05:21:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 18267 transitions. [2022-07-21 05:21:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:21:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 18267 transitions. [2022-07-21 05:21:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-21 05:21:14,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:14,122 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] [2022-07-21 05:21:14,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 05:21:14,123 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2065979923, now seen corresponding path program 1 times [2022-07-21 05:21:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:14,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196979084] [2022-07-21 05:21:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:21:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:21:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:21:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:21:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:21:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:21:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:21:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:21:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:21:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 05:21:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:21:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:21:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:21:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:21:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:21:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-21 05:21:14,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196979084] [2022-07-21 05:21:14,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196979084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:14,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:14,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:21:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713610313] [2022-07-21 05:21:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:21:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:21:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:21:14,195 INFO L87 Difference]: Start difference. First operand 14366 states and 18267 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:21:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:19,027 INFO L93 Difference]: Finished difference Result 37324 states and 48512 transitions. [2022-07-21 05:21:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:21:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 6 states have internal predecessors, (114), 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 216 [2022-07-21 05:21:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:19,078 INFO L225 Difference]: With dead ends: 37324 [2022-07-21 05:21:19,078 INFO L226 Difference]: Without dead ends: 27051 [2022-07-21 05:21:19,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:21:19,092 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 611 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:19,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 2999 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:21:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2022-07-21 05:21:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 17739. [2022-07-21 05:21:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 13570 states have (on average 1.2665438467207075) internal successors, (17187), 13692 states have internal predecessors, (17187), 2637 states have call successors, (2637), 1531 states have call predecessors, (2637), 1531 states have return successors, (2637), 2515 states have call predecessors, (2637), 2637 states have call successors, (2637) [2022-07-21 05:21:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 22461 transitions. [2022-07-21 05:21:21,953 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 22461 transitions. Word has length 216 [2022-07-21 05:21:21,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:21,953 INFO L495 AbstractCegarLoop]: Abstraction has 17739 states and 22461 transitions. [2022-07-21 05:21:21,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:21:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 22461 transitions. [2022-07-21 05:21:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 05:21:21,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:21,961 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] [2022-07-21 05:21:21,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 05:21:21,961 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 231937200, now seen corresponding path program 1 times [2022-07-21 05:21:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:21,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624417336] [2022-07-21 05:21:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:21,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:21:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:21:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:21:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:21:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:21:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:21:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:21:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:21:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 05:21:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:21:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:21:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:21:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:21:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:21:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:21:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:21:22,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:22,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624417336] [2022-07-21 05:21:22,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624417336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:22,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408911470] [2022-07-21 05:21:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:22,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:22,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:22,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:21:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:22,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 05:21:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 05:21:22,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:21:22,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408911470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:22,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:21:22,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-21 05:21:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587856250] [2022-07-21 05:21:22,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:22,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:21:22,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:21:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:21:22,350 INFO L87 Difference]: Start difference. First operand 17739 states and 22461 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:21:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:26,314 INFO L93 Difference]: Finished difference Result 38045 states and 49370 transitions. [2022-07-21 05:21:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:21:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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 217 [2022-07-21 05:21:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:26,357 INFO L225 Difference]: With dead ends: 38045 [2022-07-21 05:21:26,357 INFO L226 Difference]: Without dead ends: 21711 [2022-07-21 05:21:26,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:21:26,373 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 671 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:26,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 2361 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:21:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21711 states. [2022-07-21 05:21:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21711 to 17739. [2022-07-21 05:21:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 13570 states have (on average 1.2602063375092114) internal successors, (17101), 13692 states have internal predecessors, (17101), 2637 states have call successors, (2637), 1531 states have call predecessors, (2637), 1531 states have return successors, (2637), 2515 states have call predecessors, (2637), 2637 states have call successors, (2637) [2022-07-21 05:21:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 22375 transitions. [2022-07-21 05:21:29,285 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 22375 transitions. Word has length 217 [2022-07-21 05:21:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:29,285 INFO L495 AbstractCegarLoop]: Abstraction has 17739 states and 22375 transitions. [2022-07-21 05:21:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:21:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 22375 transitions. [2022-07-21 05:21:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 05:21:29,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:29,292 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:29,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:29,508 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 [2022-07-21 05:21:29,509 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash -639550038, now seen corresponding path program 1 times [2022-07-21 05:21:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:29,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890884108] [2022-07-21 05:21:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:21:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:21:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:21:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:21:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:21:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:21:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:21:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:21:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890884108] [2022-07-21 05:21:29,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890884108] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297209611] [2022-07-21 05:21:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:29,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:29,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:21:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:29,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:29,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:21:30,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:21:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297209611] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:30,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:30,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:21:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716768372] [2022-07-21 05:21:30,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:30,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:21:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:21:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:21:30,210 INFO L87 Difference]: Start difference. First operand 17739 states and 22375 transitions. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:21:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:34,622 INFO L93 Difference]: Finished difference Result 33921 states and 43141 transitions. [2022-07-21 05:21:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:21:34,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 223 [2022-07-21 05:21:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:34,667 INFO L225 Difference]: With dead ends: 33921 [2022-07-21 05:21:34,667 INFO L226 Difference]: Without dead ends: 20736 [2022-07-21 05:21:34,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:21:34,687 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1333 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:34,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 4415 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:21:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20736 states. [2022-07-21 05:21:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20736 to 17739. [2022-07-21 05:21:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 13570 states have (on average 1.2562269712601326) internal successors, (17047), 13692 states have internal predecessors, (17047), 2637 states have call successors, (2637), 1531 states have call predecessors, (2637), 1531 states have return successors, (2637), 2515 states have call predecessors, (2637), 2637 states have call successors, (2637) [2022-07-21 05:21:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 22321 transitions. [2022-07-21 05:21:37,970 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 22321 transitions. Word has length 223 [2022-07-21 05:21:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:37,971 INFO L495 AbstractCegarLoop]: Abstraction has 17739 states and 22321 transitions. [2022-07-21 05:21:37,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 11 states have internal predecessors, (231), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:21:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 22321 transitions. [2022-07-21 05:21:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 05:21:37,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:37,979 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:37,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 05:21:38,199 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 [2022-07-21 05:21:38,200 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 267578377, now seen corresponding path program 1 times [2022-07-21 05:21:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258584658] [2022-07-21 05:21:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:21:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:21:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:21:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:21:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:21:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:21:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:21:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:21:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258584658] [2022-07-21 05:21:38,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258584658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:38,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:38,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:21:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121376500] [2022-07-21 05:21:38,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:21:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:21:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:21:38,296 INFO L87 Difference]: Start difference. First operand 17739 states and 22321 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:42,593 INFO L93 Difference]: Finished difference Result 34536 states and 44573 transitions. [2022-07-21 05:21:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:21:42,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 223 [2022-07-21 05:21:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:42,643 INFO L225 Difference]: With dead ends: 34536 [2022-07-21 05:21:42,643 INFO L226 Difference]: Without dead ends: 21888 [2022-07-21 05:21:42,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:21:42,665 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 705 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:42,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 2588 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:21:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21888 states. [2022-07-21 05:21:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21888 to 17730. [2022-07-21 05:21:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17730 states, 13561 states have (on average 1.2550696851264656) internal successors, (17020), 13683 states have internal predecessors, (17020), 2637 states have call successors, (2637), 1531 states have call predecessors, (2637), 1531 states have return successors, (2637), 2515 states have call predecessors, (2637), 2637 states have call successors, (2637) [2022-07-21 05:21:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17730 states to 17730 states and 22294 transitions. [2022-07-21 05:21:45,902 INFO L78 Accepts]: Start accepts. Automaton has 17730 states and 22294 transitions. Word has length 223 [2022-07-21 05:21:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:45,903 INFO L495 AbstractCegarLoop]: Abstraction has 17730 states and 22294 transitions. [2022-07-21 05:21:45,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17730 states and 22294 transitions. [2022-07-21 05:21:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 05:21:45,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:45,910 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] [2022-07-21 05:21:45,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 05:21:45,910 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1055302569, now seen corresponding path program 1 times [2022-07-21 05:21:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:45,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22500303] [2022-07-21 05:21:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:21:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:21:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:21:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:21:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:21:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:21:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:46,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:21:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22500303] [2022-07-21 05:21:46,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22500303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128342590] [2022-07-21 05:21:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:46,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:46,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:46,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:46,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:21:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:46,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:21:46,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:46,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128342590] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:46,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:46,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-07-21 05:21:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448269717] [2022-07-21 05:21:46,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:46,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 05:21:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 05:21:46,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:21:46,777 INFO L87 Difference]: Start difference. First operand 17730 states and 22294 transitions. Second operand has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 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) [2022-07-21 05:21:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:57,824 INFO L93 Difference]: Finished difference Result 54570 states and 73129 transitions. [2022-07-21 05:21:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 05:21:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 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 224 [2022-07-21 05:21:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:57,918 INFO L225 Difference]: With dead ends: 54570 [2022-07-21 05:21:57,919 INFO L226 Difference]: Without dead ends: 38460 [2022-07-21 05:21:57,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 05:21:57,944 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 4036 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 5223 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4062 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 6269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 5223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:57,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4062 Valid, 4979 Invalid, 6269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 5223 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 05:21:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38460 states. [2022-07-21 05:22:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38460 to 21546. [2022-07-21 05:22:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21546 states, 16392 states have (on average 1.25628355295266) internal successors, (20593), 16543 states have internal predecessors, (20593), 3264 states have call successors, (3264), 1889 states have call predecessors, (3264), 1889 states have return successors, (3264), 3113 states have call predecessors, (3264), 3264 states have call successors, (3264) [2022-07-21 05:22:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 27121 transitions. [2022-07-21 05:22:02,075 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 27121 transitions. Word has length 224 [2022-07-21 05:22:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:02,075 INFO L495 AbstractCegarLoop]: Abstraction has 21546 states and 27121 transitions. [2022-07-21 05:22:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.05263157894737) internal successors, (305), 19 states have internal predecessors, (305), 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) [2022-07-21 05:22:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 27121 transitions. [2022-07-21 05:22:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 05:22:02,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:02,084 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] [2022-07-21 05:22:02,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 05:22:02,290 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 [2022-07-21 05:22:02,291 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -749883648, now seen corresponding path program 1 times [2022-07-21 05:22:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764993650] [2022-07-21 05:22:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:22:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:22:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:22:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:22:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:22:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:22:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:22:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:22:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 05:22:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:22:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 05:22:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:22:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:22:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:22:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:22:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:22:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:22:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 05:22:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764993650] [2022-07-21 05:22:02,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764993650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107990693] [2022-07-21 05:22:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:02,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:02,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:02,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:02,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 05:22:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:02,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:22:02,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:22:02,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 05:22:02,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107990693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:02,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:02,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:22:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118864481] [2022-07-21 05:22:02,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:22:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:22:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:22:02,836 INFO L87 Difference]: Start difference. First operand 21546 states and 27121 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 13 states have internal predecessors, (282), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:22:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:14,568 INFO L93 Difference]: Finished difference Result 56996 states and 75608 transitions. [2022-07-21 05:22:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:22:14,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 13 states have internal predecessors, (282), 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 225 [2022-07-21 05:22:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:14,664 INFO L225 Difference]: With dead ends: 56996 [2022-07-21 05:22:14,664 INFO L226 Difference]: Without dead ends: 37408 [2022-07-21 05:22:14,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:22:14,689 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 2120 mSDsluCounter, 5577 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 4226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:14,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 6337 Invalid, 4226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:22:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37408 states. [2022-07-21 05:22:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37408 to 22001. [2022-07-21 05:22:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22001 states, 16791 states have (on average 1.2547793460782561) internal successors, (21069), 16940 states have internal predecessors, (21069), 3292 states have call successors, (3292), 1917 states have call predecessors, (3292), 1917 states have return successors, (3292), 3143 states have call predecessors, (3292), 3292 states have call successors, (3292) [2022-07-21 05:22:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22001 states to 22001 states and 27653 transitions. [2022-07-21 05:22:19,085 INFO L78 Accepts]: Start accepts. Automaton has 22001 states and 27653 transitions. Word has length 225 [2022-07-21 05:22:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:19,086 INFO L495 AbstractCegarLoop]: Abstraction has 22001 states and 27653 transitions. [2022-07-21 05:22:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 13 states have internal predecessors, (282), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:22:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 22001 states and 27653 transitions. [2022-07-21 05:22:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 05:22:19,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:19,093 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:19,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 05:22:19,301 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 [2022-07-21 05:22:19,301 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 838054128, now seen corresponding path program 1 times [2022-07-21 05:22:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721725938] [2022-07-21 05:22:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:19,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:22:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:22:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:22:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:22:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:22:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:22:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:22:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:22:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:22:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:22:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:22:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:22:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:22:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:22:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:22:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 05:22:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 05:22:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721725938] [2022-07-21 05:22:19,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721725938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:22:19,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:22:19,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:22:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828635432] [2022-07-21 05:22:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:22:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:22:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:22:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:22:19,375 INFO L87 Difference]: Start difference. First operand 22001 states and 27653 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:22:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:24,230 INFO L93 Difference]: Finished difference Result 42140 states and 53518 transitions. [2022-07-21 05:22:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:22:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 225 [2022-07-21 05:22:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:24,282 INFO L225 Difference]: With dead ends: 42140 [2022-07-21 05:22:24,282 INFO L226 Difference]: Without dead ends: 25736 [2022-07-21 05:22:24,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:22:24,303 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 468 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1320 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 [2022-07-21 05:22:24,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1320 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:22:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25736 states. [2022-07-21 05:22:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25736 to 24026. [2022-07-21 05:22:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24026 states, 18314 states have (on average 1.2491536529431035) internal successors, (22877), 18475 states have internal predecessors, (22877), 3614 states have call successors, (3614), 2097 states have call predecessors, (3614), 2097 states have return successors, (3614), 3453 states have call predecessors, (3614), 3614 states have call successors, (3614) [2022-07-21 05:22:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24026 states to 24026 states and 30105 transitions. [2022-07-21 05:22:28,955 INFO L78 Accepts]: Start accepts. Automaton has 24026 states and 30105 transitions. Word has length 225 [2022-07-21 05:22:28,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:28,955 INFO L495 AbstractCegarLoop]: Abstraction has 24026 states and 30105 transitions. [2022-07-21 05:22:28,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:22:28,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24026 states and 30105 transitions. [2022-07-21 05:22:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 05:22:28,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:28,963 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 05:22:28,963 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1704649141, now seen corresponding path program 1 times [2022-07-21 05:22:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:28,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190715974] [2022-07-21 05:22:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:22:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:22:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:22:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:22:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:22:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:22:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:22:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:22:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:22:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:22:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:22:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:22:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:22:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:22:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:22:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:22:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:22:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:29,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190715974] [2022-07-21 05:22:29,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190715974] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:29,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681679102] [2022-07-21 05:22:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:29,238 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:29,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 05:22:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:29,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 05:22:29,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 91 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:22:29,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:22:30,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681679102] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:30,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:30,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 21 [2022-07-21 05:22:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823822317] [2022-07-21 05:22:30,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:30,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 05:22:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 05:22:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:22:30,180 INFO L87 Difference]: Start difference. First operand 24026 states and 30105 transitions. Second operand has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:22:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:39,201 INFO L93 Difference]: Finished difference Result 50438 states and 64942 transitions. [2022-07-21 05:22:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 05:22:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 226 [2022-07-21 05:22:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:39,271 INFO L225 Difference]: With dead ends: 50438 [2022-07-21 05:22:39,271 INFO L226 Difference]: Without dead ends: 30208 [2022-07-21 05:22:39,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 478 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-07-21 05:22:39,304 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 4301 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 1800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 4846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1800 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:39,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 3147 Invalid, 4846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1800 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:22:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30208 states. [2022-07-21 05:22:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30208 to 23521. [2022-07-21 05:22:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23521 states, 17934 states have (on average 1.248299319727891) internal successors, (22387), 18090 states have internal predecessors, (22387), 3537 states have call successors, (3537), 2049 states have call predecessors, (3537), 2049 states have return successors, (3537), 3381 states have call predecessors, (3537), 3537 states have call successors, (3537) [2022-07-21 05:22:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23521 states to 23521 states and 29461 transitions. [2022-07-21 05:22:44,071 INFO L78 Accepts]: Start accepts. Automaton has 23521 states and 29461 transitions. Word has length 226 [2022-07-21 05:22:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:44,071 INFO L495 AbstractCegarLoop]: Abstraction has 23521 states and 29461 transitions. [2022-07-21 05:22:44,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.047619047619047) internal successors, (379), 21 states have internal predecessors, (379), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:22:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 23521 states and 29461 transitions. [2022-07-21 05:22:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 05:22:44,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:44,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:44,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 05:22:44,287 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 [2022-07-21 05:22:44,290 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -903380742, now seen corresponding path program 1 times [2022-07-21 05:22:44,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:44,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672002807] [2022-07-21 05:22:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:22:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:22:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:22:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:22:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:22:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:22:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:22:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:22:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:22:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 05:22:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:22:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:22:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:22:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:22:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:22:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:22:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 05:22:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 05:22:44,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:44,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672002807] [2022-07-21 05:22:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672002807] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493252375] [2022-07-21 05:22:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:44,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:44,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:44,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:44,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 05:22:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:22:44,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 05:22:44,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:22:45,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493252375] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:45,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:45,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-07-21 05:22:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296278663] [2022-07-21 05:22:45,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:22:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:22:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:22:45,007 INFO L87 Difference]: Start difference. First operand 23521 states and 29461 transitions. Second operand has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:22:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:58,448 INFO L93 Difference]: Finished difference Result 62646 states and 80325 transitions. [2022-07-21 05:22:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-21 05:22:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 231 [2022-07-21 05:22:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:58,555 INFO L225 Difference]: With dead ends: 62646 [2022-07-21 05:22:58,555 INFO L226 Difference]: Without dead ends: 44179 [2022-07-21 05:22:58,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-07-21 05:22:58,591 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 3831 mSDsluCounter, 9421 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 1709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 10536 SdHoareTripleChecker+Invalid, 4982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1709 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:58,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 10536 Invalid, 4982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1709 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:22:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44179 states. [2022-07-21 05:23:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44179 to 25968. [2022-07-21 05:23:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25968 states, 19747 states have (on average 1.240542867270978) internal successors, (24497), 19923 states have internal predecessors, (24497), 3855 states have call successors, (3855), 2365 states have call predecessors, (3855), 2365 states have return successors, (3855), 3679 states have call predecessors, (3855), 3855 states have call successors, (3855) [2022-07-21 05:23:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25968 states to 25968 states and 32207 transitions. [2022-07-21 05:23:04,301 INFO L78 Accepts]: Start accepts. Automaton has 25968 states and 32207 transitions. Word has length 231 [2022-07-21 05:23:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:04,301 INFO L495 AbstractCegarLoop]: Abstraction has 25968 states and 32207 transitions. [2022-07-21 05:23:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.764705882352942) internal successors, (302), 15 states have internal predecessors, (302), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:23:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 25968 states and 32207 transitions. [2022-07-21 05:23:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 05:23:04,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:04,313 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] [2022-07-21 05:23:04,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 05:23:04,531 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 [2022-07-21 05:23:04,531 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1814192958, now seen corresponding path program 1 times [2022-07-21 05:23:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:04,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362983479] [2022-07-21 05:23:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:23:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:23:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:23:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:23:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:23:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:23:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:23:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:23:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:23:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:23:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:23:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:23:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:23:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:23:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 05:23:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:23:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-21 05:23:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 05:23:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-21 05:23:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362983479] [2022-07-21 05:23:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362983479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:23:04,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:23:04,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:23:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793300878] [2022-07-21 05:23:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:23:04,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:23:04,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:23:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:23:04,578 INFO L87 Difference]: Start difference. First operand 25968 states and 32207 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2022-07-21 05:23:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:11,739 INFO L93 Difference]: Finished difference Result 53698 states and 67988 transitions. [2022-07-21 05:23:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:23:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 230 [2022-07-21 05:23:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:11,800 INFO L225 Difference]: With dead ends: 53698 [2022-07-21 05:23:11,801 INFO L226 Difference]: Without dead ends: 30789 [2022-07-21 05:23:11,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:23:11,824 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 428 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:11,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1069 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:23:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30789 states. [2022-07-21 05:23:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30789 to 25956. [2022-07-21 05:23:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25956 states, 19735 states have (on average 1.2394730174816315) internal successors, (24461), 19911 states have internal predecessors, (24461), 3855 states have call successors, (3855), 2365 states have call predecessors, (3855), 2365 states have return successors, (3855), 3679 states have call predecessors, (3855), 3855 states have call successors, (3855) [2022-07-21 05:23:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25956 states to 25956 states and 32171 transitions. [2022-07-21 05:23:17,405 INFO L78 Accepts]: Start accepts. Automaton has 25956 states and 32171 transitions. Word has length 230 [2022-07-21 05:23:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:17,406 INFO L495 AbstractCegarLoop]: Abstraction has 25956 states and 32171 transitions. [2022-07-21 05:23:17,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2022-07-21 05:23:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25956 states and 32171 transitions. [2022-07-21 05:23:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 05:23:17,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:17,417 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] [2022-07-21 05:23:17,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 05:23:17,417 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash 424212380, now seen corresponding path program 1 times [2022-07-21 05:23:17,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:17,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131489551] [2022-07-21 05:23:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:23:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:23:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:23:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:23:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:23:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:23:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:23:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:23:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:23:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:23:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:23:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:23:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:23:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:23:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 05:23:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:23:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-21 05:23:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 05:23:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:23:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131489551] [2022-07-21 05:23:17,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131489551] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:23:17,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704097403] [2022-07-21 05:23:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:23:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:23:17,538 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:23:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 05:23:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:17,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:23:17,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:23:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:23:17,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:23:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:23:18,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704097403] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:23:18,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:23:18,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:23:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189770150] [2022-07-21 05:23:18,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:23:18,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:23:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:23:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:23:18,104 INFO L87 Difference]: Start difference. First operand 25956 states and 32171 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 11 states have internal predecessors, (237), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:23:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:23:27,631 INFO L93 Difference]: Finished difference Result 53742 states and 69130 transitions. [2022-07-21 05:23:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:23:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 11 states have internal predecessors, (237), 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 230 [2022-07-21 05:23:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:23:27,704 INFO L225 Difference]: With dead ends: 53742 [2022-07-21 05:23:27,705 INFO L226 Difference]: Without dead ends: 34047 [2022-07-21 05:23:27,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 495 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:23:27,728 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1012 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 5095 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:23:27,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 5095 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:23:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34047 states. [2022-07-21 05:23:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34047 to 21589. [2022-07-21 05:23:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21589 states, 16440 states have (on average 1.2394160583941607) internal successors, (20376), 16588 states have internal predecessors, (20376), 3173 states have call successors, (3173), 1975 states have call predecessors, (3173), 1975 states have return successors, (3173), 3025 states have call predecessors, (3173), 3173 states have call successors, (3173) [2022-07-21 05:23:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21589 states to 21589 states and 26722 transitions. [2022-07-21 05:23:33,044 INFO L78 Accepts]: Start accepts. Automaton has 21589 states and 26722 transitions. Word has length 230 [2022-07-21 05:23:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:23:33,044 INFO L495 AbstractCegarLoop]: Abstraction has 21589 states and 26722 transitions. [2022-07-21 05:23:33,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 11 states have internal predecessors, (237), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:23:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 21589 states and 26722 transitions. [2022-07-21 05:23:33,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 05:23:33,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:23:33,053 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 05:23:33,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 05:23:33,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:23:33,271 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:23:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:23:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash -909557541, now seen corresponding path program 1 times [2022-07-21 05:23:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:23:33,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299755566] [2022-07-21 05:23:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:23:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:23:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:23:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:23:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:23:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:23:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:23:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:23:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:23:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:23:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:23:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 05:23:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 05:23:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 05:23:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:23:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 05:23:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:23:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:23:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:23:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 05:23:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-21 05:23:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:23:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:23:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299755566] [2022-07-21 05:23:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299755566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:23:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764899365] [2022-07-21 05:23:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:23:33,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:23:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:23:33,417 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:23:33,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 05:23:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:23:33,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 05:23:33,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:23:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 27 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 05:23:34,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:23:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:23:34,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764899365] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:23:34,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:23:34,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-07-21 05:23:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313089883] [2022-07-21 05:23:34,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:23:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 05:23:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:23:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 05:23:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:23:34,669 INFO L87 Difference]: Start difference. First operand 21589 states and 26722 transitions. Second operand has 25 states, 25 states have (on average 15.4) internal successors, (385), 25 states have internal predecessors, (385), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54)