./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label34.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/eca-rers2012/Problem12_label34.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 17803901f2bb132fce3064319bf4f9afa7f3fd90a7f5cfbce31266b1de694c6a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 23:48:02,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 23:48:02,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 23:48:02,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 23:48:02,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 23:48:02,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 23:48:02,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 23:48:02,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 23:48:02,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 23:48:02,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 23:48:02,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 23:48:02,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 23:48:02,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 23:48:02,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 23:48:02,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 23:48:02,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 23:48:02,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 23:48:02,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 23:48:02,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 23:48:02,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 23:48:02,854 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 23:48:02,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 23:48:02,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 23:48:02,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 23:48:02,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 23:48:02,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 23:48:02,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 23:48:02,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 23:48:02,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 23:48:02,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 23:48:02,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 23:48:02,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 23:48:02,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 23:48:02,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 23:48:02,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 23:48:02,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 23:48:02,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 23:48:02,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 23:48:02,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 23:48:02,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 23:48:02,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 23:48:02,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 23:48:02,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 23:48:02,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 23:48:02,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 23:48:02,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 23:48:02,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 23:48:02,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 23:48:02,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 23:48:02,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 23:48:02,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 23:48:02,882 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 23:48:02,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 23:48:02,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 23:48:02,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 23:48:02,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 23:48:02,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 23:48:02,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 23:48:02,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 23:48:02,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 23:48:02,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 23:48:02,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 23:48:02,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 23:48:02,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 23:48:02,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 23:48:02,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 23:48:02,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 23:48:02,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:48:02,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 23:48:02,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 23:48:02,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 23:48:02,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17803901f2bb132fce3064319bf4f9afa7f3fd90a7f5cfbce31266b1de694c6a [2022-07-20 23:48:03,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 23:48:03,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 23:48:03,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 23:48:03,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 23:48:03,134 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 23:48:03,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label34.c [2022-07-20 23:48:03,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a227a2d32/61f0ffa44398478cb3c3a666a7182126/FLAGaab864679 [2022-07-20 23:48:03,745 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 23:48:03,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label34.c [2022-07-20 23:48:03,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a227a2d32/61f0ffa44398478cb3c3a666a7182126/FLAGaab864679 [2022-07-20 23:48:03,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a227a2d32/61f0ffa44398478cb3c3a666a7182126 [2022-07-20 23:48:03,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 23:48:03,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 23:48:03,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 23:48:03,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 23:48:03,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 23:48:03,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:03" (1/1) ... [2022-07-20 23:48:03,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6fd8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:03, skipping insertion in model container [2022-07-20 23:48:03,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:03" (1/1) ... [2022-07-20 23:48:03,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 23:48:04,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 23:48:04,218 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/eca-rers2012/Problem12_label34.c[2340,2353] [2022-07-20 23:48:04,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:48:04,776 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 23:48:04,794 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/eca-rers2012/Problem12_label34.c[2340,2353] [2022-07-20 23:48:05,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:48:05,136 INFO L208 MainTranslator]: Completed translation [2022-07-20 23:48:05,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05 WrapperNode [2022-07-20 23:48:05,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 23:48:05,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 23:48:05,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 23:48:05,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 23:48:05,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,503 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-20 23:48:05,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 23:48:05,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 23:48:05,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 23:48:05,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 23:48:05,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 23:48:05,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 23:48:05,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 23:48:05,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 23:48:05,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (1/1) ... [2022-07-20 23:48:05,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:48:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:48:05,937 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) [2022-07-20 23:48:05,994 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 [2022-07-20 23:48:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 23:48:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 23:48:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 23:48:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 23:48:06,108 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 23:48:06,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 23:48:08,817 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 23:48:08,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 23:48:08,828 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 23:48:08,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:08 BoogieIcfgContainer [2022-07-20 23:48:08,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 23:48:08,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 23:48:08,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 23:48:08,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 23:48:08,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:48:03" (1/3) ... [2022-07-20 23:48:08,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133f090b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:08, skipping insertion in model container [2022-07-20 23:48:08,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:05" (2/3) ... [2022-07-20 23:48:08,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133f090b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:08, skipping insertion in model container [2022-07-20 23:48:08,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:08" (3/3) ... [2022-07-20 23:48:08,835 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label34.c [2022-07-20 23:48:08,844 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 23:48:08,844 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 23:48:08,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 23:48:08,888 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@516ba217, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4be8f47a [2022-07-20 23:48:08,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 23:48:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 23:48:08,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:08,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:08,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1657508526, now seen corresponding path program 1 times [2022-07-20 23:48:08,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:08,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870749477] [2022-07-20 23:48:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:48:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:09,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870749477] [2022-07-20 23:48:09,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870749477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:09,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:09,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:48:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021900046] [2022-07-20 23:48:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:09,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:09,035 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:12,065 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-20 23:48:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:12,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-20 23:48:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:12,088 INFO L225 Difference]: With dead ends: 2388 [2022-07-20 23:48:12,089 INFO L226 Difference]: Without dead ends: 1506 [2022-07-20 23:48:12,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:12,096 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 843 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:12,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-20 23:48:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-20 23:48:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-20 23:48:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2022-07-20 23:48:12,165 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 16 [2022-07-20 23:48:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:12,166 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2022-07-20 23:48:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2022-07-20 23:48:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-20 23:48:12,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:12,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:12,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 23:48:12,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:12,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:12,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1021498908, now seen corresponding path program 1 times [2022-07-20 23:48:12,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:12,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115677886] [2022-07-20 23:48:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:48:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115677886] [2022-07-20 23:48:12,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115677886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:12,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:12,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:48:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699507873] [2022-07-20 23:48:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:12,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:12,333 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:14,880 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2022-07-20 23:48:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-07-20 23:48:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:14,890 INFO L225 Difference]: With dead ends: 4514 [2022-07-20 23:48:14,891 INFO L226 Difference]: Without dead ends: 3010 [2022-07-20 23:48:14,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:14,895 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:14,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:48:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-07-20 23:48:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2022-07-20 23:48:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2022-07-20 23:48:14,947 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 89 [2022-07-20 23:48:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:14,948 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2022-07-20 23:48:14,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2022-07-20 23:48:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-20 23:48:14,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:14,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 23:48:14,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1732511511, now seen corresponding path program 1 times [2022-07-20 23:48:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844683551] [2022-07-20 23:48:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:48:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:15,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844683551] [2022-07-20 23:48:15,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844683551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:15,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:15,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:15,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106192631] [2022-07-20 23:48:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:48:15,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:48:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:48:15,076 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:19,226 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2022-07-20 23:48:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:48:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-07-20 23:48:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:19,246 INFO L225 Difference]: With dead ends: 8267 [2022-07-20 23:48:19,246 INFO L226 Difference]: Without dead ends: 5261 [2022-07-20 23:48:19,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:48:19,250 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:19,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-20 23:48:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-07-20 23:48:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-07-20 23:48:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2022-07-20 23:48:19,317 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 102 [2022-07-20 23:48:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:19,318 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2022-07-20 23:48:19,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2022-07-20 23:48:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-20 23:48:19,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:19,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 23:48:19,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1695528334, now seen corresponding path program 1 times [2022-07-20 23:48:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151581318] [2022-07-20 23:48:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:19,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:48:19,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:19,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151581318] [2022-07-20 23:48:19,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151581318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:48:19,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162893755] [2022-07-20 23:48:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:19,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:48:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:48:19,481 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) [2022-07-20 23:48:19,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 23:48:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:19,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:48:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:48:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-20 23:48:19,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:48:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162893755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:19,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:48:19,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-20 23:48:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491164958] [2022-07-20 23:48:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:48:19,766 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:22,351 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2022-07-20 23:48:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-07-20 23:48:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:22,376 INFO L225 Difference]: With dead ends: 14275 [2022-07-20 23:48:22,377 INFO L226 Difference]: Without dead ends: 9767 [2022-07-20 23:48:22,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:48:22,385 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 622 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:22,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 643 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:48:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-20 23:48:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 8265. [2022-07-20 23:48:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.547676669893514) internal successors, (12790), 8264 states have internal predecessors, (12790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 12790 transitions. [2022-07-20 23:48:22,550 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 12790 transitions. Word has length 157 [2022-07-20 23:48:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:22,551 INFO L495 AbstractCegarLoop]: Abstraction has 8265 states and 12790 transitions. [2022-07-20 23:48:22,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 12790 transitions. [2022-07-20 23:48:22,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-20 23:48:22,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:22,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:22,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 23:48:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:48:22,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -699873853, now seen corresponding path program 1 times [2022-07-20 23:48:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:22,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357247449] [2022-07-20 23:48:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-20 23:48:22,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:22,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357247449] [2022-07-20 23:48:22,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357247449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:22,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:22,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888554042] [2022-07-20 23:48:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:48:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:48:22,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:48:22,887 INFO L87 Difference]: Start difference. First operand 8265 states and 12790 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:25,511 INFO L93 Difference]: Finished difference Result 18818 states and 29045 transitions. [2022-07-20 23:48:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:48:25,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-07-20 23:48:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:25,544 INFO L225 Difference]: With dead ends: 18818 [2022-07-20 23:48:25,544 INFO L226 Difference]: Without dead ends: 11269 [2022-07-20 23:48:25,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:48:25,553 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:25,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:48:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2022-07-20 23:48:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 10518. [2022-07-20 23:48:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10518 states, 10517 states have (on average 1.432157459351526) internal successors, (15062), 10517 states have internal predecessors, (15062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 15062 transitions. [2022-07-20 23:48:25,701 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 15062 transitions. Word has length 237 [2022-07-20 23:48:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:25,701 INFO L495 AbstractCegarLoop]: Abstraction has 10518 states and 15062 transitions. [2022-07-20 23:48:25,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 15062 transitions. [2022-07-20 23:48:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-20 23:48:25,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:25,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:25,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 23:48:25,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1563565100, now seen corresponding path program 1 times [2022-07-20 23:48:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706268017] [2022-07-20 23:48:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-20 23:48:25,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706268017] [2022-07-20 23:48:25,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706268017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:25,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:25,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:48:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299557927] [2022-07-20 23:48:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:25,816 INFO L87 Difference]: Start difference. First operand 10518 states and 15062 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:28,022 INFO L93 Difference]: Finished difference Result 26291 states and 37839 transitions. [2022-07-20 23:48:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:28,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2022-07-20 23:48:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:28,046 INFO L225 Difference]: With dead ends: 26291 [2022-07-20 23:48:28,047 INFO L226 Difference]: Without dead ends: 16526 [2022-07-20 23:48:28,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:28,056 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:28,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 23:48:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-07-20 23:48:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 14273. [2022-07-20 23:48:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2490190582959642) internal successors, (17826), 14272 states have internal predecessors, (17826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 17826 transitions. [2022-07-20 23:48:28,212 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 17826 transitions. Word has length 307 [2022-07-20 23:48:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:28,213 INFO L495 AbstractCegarLoop]: Abstraction has 14273 states and 17826 transitions. [2022-07-20 23:48:28,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 17826 transitions. [2022-07-20 23:48:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-07-20 23:48:28,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:28,218 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:48:28,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 23:48:28,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash -860967537, now seen corresponding path program 1 times [2022-07-20 23:48:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:28,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098389086] [2022-07-20 23:48:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-20 23:48:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098389086] [2022-07-20 23:48:28,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098389086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:28,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:28,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409167926] [2022-07-20 23:48:28,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:28,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:28,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:28,409 INFO L87 Difference]: Start difference. First operand 14273 states and 17826 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:30,828 INFO L93 Difference]: Finished difference Result 34552 states and 44195 transitions. [2022-07-20 23:48:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:30,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2022-07-20 23:48:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:30,857 INFO L225 Difference]: With dead ends: 34552 [2022-07-20 23:48:30,857 INFO L226 Difference]: Without dead ends: 21032 [2022-07-20 23:48:30,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:30,872 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 828 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:30,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 147 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 23:48:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2022-07-20 23:48:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 20281. [2022-07-20 23:48:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20281 states, 20280 states have (on average 1.265877712031558) internal successors, (25672), 20280 states have internal predecessors, (25672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20281 states to 20281 states and 25672 transitions. [2022-07-20 23:48:31,181 INFO L78 Accepts]: Start accepts. Automaton has 20281 states and 25672 transitions. Word has length 386 [2022-07-20 23:48:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:31,181 INFO L495 AbstractCegarLoop]: Abstraction has 20281 states and 25672 transitions. [2022-07-20 23:48:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 20281 states and 25672 transitions. [2022-07-20 23:48:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-07-20 23:48:31,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:31,188 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:48:31,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 23:48:31,188 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 503488010, now seen corresponding path program 1 times [2022-07-20 23:48:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:31,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738258198] [2022-07-20 23:48:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:31,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-20 23:48:31,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:31,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738258198] [2022-07-20 23:48:31,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738258198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:31,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:31,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886151242] [2022-07-20 23:48:31,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:31,320 INFO L87 Difference]: Start difference. First operand 20281 states and 25672 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:33,842 INFO L93 Difference]: Finished difference Result 54829 states and 70666 transitions. [2022-07-20 23:48:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:33,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2022-07-20 23:48:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:33,890 INFO L225 Difference]: With dead ends: 54829 [2022-07-20 23:48:33,891 INFO L226 Difference]: Without dead ends: 35301 [2022-07-20 23:48:33,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:33,911 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 727 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:33,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 382 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 23:48:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35301 states. [2022-07-20 23:48:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35301 to 33799. [2022-07-20 23:48:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33799 states, 33798 states have (on average 1.2430617196283804) internal successors, (42013), 33798 states have internal predecessors, (42013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33799 states to 33799 states and 42013 transitions. [2022-07-20 23:48:34,251 INFO L78 Accepts]: Start accepts. Automaton has 33799 states and 42013 transitions. Word has length 402 [2022-07-20 23:48:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:34,252 INFO L495 AbstractCegarLoop]: Abstraction has 33799 states and 42013 transitions. [2022-07-20 23:48:34,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 33799 states and 42013 transitions. [2022-07-20 23:48:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-07-20 23:48:34,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:34,261 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:34,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 23:48:34,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1182234576, now seen corresponding path program 1 times [2022-07-20 23:48:34,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:34,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543855981] [2022-07-20 23:48:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 41 proven. 14 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-20 23:48:34,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:34,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543855981] [2022-07-20 23:48:34,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543855981] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:48:34,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224764607] [2022-07-20 23:48:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:34,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:48:34,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:48:34,508 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) [2022-07-20 23:48:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 23:48:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:34,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:48:34,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:48:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-20 23:48:35,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:48:35,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224764607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:35,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:48:35,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-20 23:48:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389915315] [2022-07-20 23:48:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:48:35,092 INFO L87 Difference]: Start difference. First operand 33799 states and 42013 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:37,545 INFO L93 Difference]: Finished difference Result 97636 states and 121962 transitions. [2022-07-20 23:48:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 495 [2022-07-20 23:48:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:37,624 INFO L225 Difference]: With dead ends: 97636 [2022-07-20 23:48:37,624 INFO L226 Difference]: Without dead ends: 64590 [2022-07-20 23:48:37,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:48:37,655 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 535 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:37,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 495 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 23:48:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64590 states. [2022-07-20 23:48:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64590 to 60084. [2022-07-20 23:48:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60084 states, 60083 states have (on average 1.1921841452657158) internal successors, (71630), 60083 states have internal predecessors, (71630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60084 states to 60084 states and 71630 transitions. [2022-07-20 23:48:38,443 INFO L78 Accepts]: Start accepts. Automaton has 60084 states and 71630 transitions. Word has length 495 [2022-07-20 23:48:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:38,443 INFO L495 AbstractCegarLoop]: Abstraction has 60084 states and 71630 transitions. [2022-07-20 23:48:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 60084 states and 71630 transitions. [2022-07-20 23:48:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-20 23:48:38,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:38,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:38,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-20 23:48:38,672 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,SelfDestructingSolverStorable8 [2022-07-20 23:48:38,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash -412767297, now seen corresponding path program 1 times [2022-07-20 23:48:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922111884] [2022-07-20 23:48:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-20 23:48:38,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922111884] [2022-07-20 23:48:38,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922111884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:38,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:38,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511217209] [2022-07-20 23:48:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:38,820 INFO L87 Difference]: Start difference. First operand 60084 states and 71630 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:41,526 INFO L93 Difference]: Finished difference Result 147202 states and 177627 transitions. [2022-07-20 23:48:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2022-07-20 23:48:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:41,713 INFO L225 Difference]: With dead ends: 147202 [2022-07-20 23:48:41,713 INFO L226 Difference]: Without dead ends: 87871 [2022-07-20 23:48:41,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:41,754 INFO L413 NwaCegarLoop]: 1265 mSDtfsCounter, 557 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:41,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1273 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 23:48:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87871 states. [2022-07-20 23:48:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87871 to 83365. [2022-07-20 23:48:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83365 states, 83364 states have (on average 1.1656350463029606) internal successors, (97172), 83364 states have internal predecessors, (97172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83365 states to 83365 states and 97172 transitions. [2022-07-20 23:48:42,743 INFO L78 Accepts]: Start accepts. Automaton has 83365 states and 97172 transitions. Word has length 501 [2022-07-20 23:48:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:42,743 INFO L495 AbstractCegarLoop]: Abstraction has 83365 states and 97172 transitions. [2022-07-20 23:48:42,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 83365 states and 97172 transitions. [2022-07-20 23:48:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-20 23:48:42,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:42,756 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:48:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 23:48:42,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash -164009204, now seen corresponding path program 1 times [2022-07-20 23:48:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265570565] [2022-07-20 23:48:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-20 23:48:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265570565] [2022-07-20 23:48:42,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265570565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:42,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:42,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000844271] [2022-07-20 23:48:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:42,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:42,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:42,956 INFO L87 Difference]: Start difference. First operand 83365 states and 97172 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:45,546 INFO L93 Difference]: Finished difference Result 170483 states and 198245 transitions. [2022-07-20 23:48:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2022-07-20 23:48:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:45,668 INFO L225 Difference]: With dead ends: 170483 [2022-07-20 23:48:45,668 INFO L226 Difference]: Without dead ends: 83365 [2022-07-20 23:48:45,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:45,684 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 654 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:45,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1243 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 23:48:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2022-07-20 23:48:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 75104. [2022-07-20 23:48:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75104 states, 75103 states have (on average 1.1063206529699212) internal successors, (83088), 75103 states have internal predecessors, (83088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75104 states to 75104 states and 83088 transitions. [2022-07-20 23:48:46,529 INFO L78 Accepts]: Start accepts. Automaton has 75104 states and 83088 transitions. Word has length 507 [2022-07-20 23:48:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:46,529 INFO L495 AbstractCegarLoop]: Abstraction has 75104 states and 83088 transitions. [2022-07-20 23:48:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 75104 states and 83088 transitions. [2022-07-20 23:48:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2022-07-20 23:48:46,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:46,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:46,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 23:48:46,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1104075952, now seen corresponding path program 1 times [2022-07-20 23:48:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:46,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072909141] [2022-07-20 23:48:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-07-20 23:48:46,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:46,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072909141] [2022-07-20 23:48:46,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072909141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:46,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:46,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:46,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698135284] [2022-07-20 23:48:46,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:46,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:46,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:46,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:46,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:46,912 INFO L87 Difference]: Start difference. First operand 75104 states and 83088 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:49,595 INFO L93 Difference]: Finished difference Result 178744 states and 198569 transitions. [2022-07-20 23:48:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 738 [2022-07-20 23:48:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:49,735 INFO L225 Difference]: With dead ends: 178744 [2022-07-20 23:48:49,735 INFO L226 Difference]: Without dead ends: 104393 [2022-07-20 23:48:49,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:49,785 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 429 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:49,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1170 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 23:48:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104393 states. [2022-07-20 23:48:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104393 to 102891. [2022-07-20 23:48:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.0974341529789096) internal successors, (112915), 102890 states have internal predecessors, (112915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 112915 transitions. [2022-07-20 23:48:51,202 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 112915 transitions. Word has length 738 [2022-07-20 23:48:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:51,203 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 112915 transitions. [2022-07-20 23:48:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 112915 transitions. [2022-07-20 23:48:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-07-20 23:48:51,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:51,239 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:51,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 23:48:51,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1383010271, now seen corresponding path program 1 times [2022-07-20 23:48:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:51,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309525183] [2022-07-20 23:48:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:51,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2022-07-20 23:48:51,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:51,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309525183] [2022-07-20 23:48:51,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309525183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:51,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:51,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:48:51,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120784088] [2022-07-20 23:48:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:51,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:48:51,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:48:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:51,570 INFO L87 Difference]: Start difference. First operand 102891 states and 112915 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:48:54,359 INFO L93 Difference]: Finished difference Result 226808 states and 249370 transitions. [2022-07-20 23:48:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:48:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 811 [2022-07-20 23:48:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:48:54,502 INFO L225 Difference]: With dead ends: 226808 [2022-07-20 23:48:54,503 INFO L226 Difference]: Without dead ends: 124670 [2022-07-20 23:48:54,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:48:54,525 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 857 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:48:54,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1117 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 23:48:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124670 states. [2022-07-20 23:48:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124670 to 119413. [2022-07-20 23:48:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.0886510568452081) internal successors, (129998), 119412 states have internal predecessors, (129998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 129998 transitions. [2022-07-20 23:48:56,060 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 129998 transitions. Word has length 811 [2022-07-20 23:48:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:48:56,061 INFO L495 AbstractCegarLoop]: Abstraction has 119413 states and 129998 transitions. [2022-07-20 23:48:56,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:48:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 129998 transitions. [2022-07-20 23:48:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2022-07-20 23:48:56,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:48:56,143 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:48:56,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 23:48:56,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:48:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:48:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -864857292, now seen corresponding path program 1 times [2022-07-20 23:48:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:48:56,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117046142] [2022-07-20 23:48:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:48:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:48:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:48:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 23:48:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:48:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117046142] [2022-07-20 23:48:56,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117046142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:48:56,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:48:56,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 23:48:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382897495] [2022-07-20 23:48:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:48:56,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 23:48:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:48:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 23:48:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 23:48:56,423 INFO L87 Difference]: Start difference. First operand 119413 states and 129998 transitions. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:49:02,138 INFO L93 Difference]: Finished difference Result 251886 states and 274107 transitions. [2022-07-20 23:49:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 23:49:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 906 [2022-07-20 23:49:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:49:02,286 INFO L225 Difference]: With dead ends: 251886 [2022-07-20 23:49:02,286 INFO L226 Difference]: Without dead ends: 133226 [2022-07-20 23:49:02,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:49:02,346 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2515 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 7649 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 8585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 7649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-20 23:49:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2515 Valid, 534 Invalid, 8585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 7649 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-20 23:49:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133226 states. [2022-07-20 23:49:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133226 to 128425. [2022-07-20 23:49:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128425 states, 128424 states have (on average 1.0876627421665732) internal successors, (139682), 128424 states have internal predecessors, (139682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128425 states to 128425 states and 139682 transitions. [2022-07-20 23:49:04,042 INFO L78 Accepts]: Start accepts. Automaton has 128425 states and 139682 transitions. Word has length 906 [2022-07-20 23:49:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:49:04,042 INFO L495 AbstractCegarLoop]: Abstraction has 128425 states and 139682 transitions. [2022-07-20 23:49:04,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 128425 states and 139682 transitions. [2022-07-20 23:49:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2022-07-20 23:49:04,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:49:04,078 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:49:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 23:49:04,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:49:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:49:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2109302434, now seen corresponding path program 1 times [2022-07-20 23:49:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:49:04,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908894993] [2022-07-20 23:49:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:49:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:49:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:49:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-20 23:49:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:49:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908894993] [2022-07-20 23:49:04,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908894993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:49:04,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:49:04,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:49:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861345980] [2022-07-20 23:49:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:49:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:49:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:49:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:49:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:04,331 INFO L87 Difference]: Start difference. First operand 128425 states and 139682 transitions. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:49:07,281 INFO L93 Difference]: Finished difference Result 272619 states and 296390 transitions. [2022-07-20 23:49:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:49:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 929 [2022-07-20 23:49:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:49:07,459 INFO L225 Difference]: With dead ends: 272619 [2022-07-20 23:49:07,459 INFO L226 Difference]: Without dead ends: 144947 [2022-07-20 23:49:07,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:07,508 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:49:07,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1316 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 23:49:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144947 states. [2022-07-20 23:49:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144947 to 143445. [2022-07-20 23:49:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143445 states, 143444 states have (on average 1.0820598979392655) internal successors, (155215), 143444 states have internal predecessors, (155215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143445 states to 143445 states and 155215 transitions. [2022-07-20 23:49:09,211 INFO L78 Accepts]: Start accepts. Automaton has 143445 states and 155215 transitions. Word has length 929 [2022-07-20 23:49:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:49:09,212 INFO L495 AbstractCegarLoop]: Abstraction has 143445 states and 155215 transitions. [2022-07-20 23:49:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 143445 states and 155215 transitions. [2022-07-20 23:49:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2022-07-20 23:49:09,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:49:09,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:49:09,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 23:49:09,528 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:49:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:49:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash 784350022, now seen corresponding path program 1 times [2022-07-20 23:49:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:49:09,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260404794] [2022-07-20 23:49:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:49:09,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:49:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:49:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 1020 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-20 23:49:09,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:49:09,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260404794] [2022-07-20 23:49:09,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260404794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:49:09,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:49:09,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:49:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795881013] [2022-07-20 23:49:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:49:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:49:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:49:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:49:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:09,885 INFO L87 Difference]: Start difference. First operand 143445 states and 155215 transitions. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:49:12,848 INFO L93 Difference]: Finished difference Result 298153 states and 322250 transitions. [2022-07-20 23:49:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:49:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1041 [2022-07-20 23:49:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:49:13,032 INFO L225 Difference]: With dead ends: 298153 [2022-07-20 23:49:13,032 INFO L226 Difference]: Without dead ends: 155461 [2022-07-20 23:49:13,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:13,112 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 583 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:49:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1278 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 23:49:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155461 states. [2022-07-20 23:49:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155461 to 154710. [2022-07-20 23:49:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154710 states, 154709 states have (on average 1.0740228428856757) internal successors, (166161), 154709 states have internal predecessors, (166161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154710 states to 154710 states and 166161 transitions. [2022-07-20 23:49:15,249 INFO L78 Accepts]: Start accepts. Automaton has 154710 states and 166161 transitions. Word has length 1041 [2022-07-20 23:49:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:49:15,249 INFO L495 AbstractCegarLoop]: Abstraction has 154710 states and 166161 transitions. [2022-07-20 23:49:15,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 154710 states and 166161 transitions. [2022-07-20 23:49:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2022-07-20 23:49:15,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:49:15,338 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:49:15,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 23:49:15,339 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:49:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:49:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -82410164, now seen corresponding path program 1 times [2022-07-20 23:49:15,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:49:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199255767] [2022-07-20 23:49:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:49:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:49:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:49:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 1270 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-20 23:49:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:49:15,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199255767] [2022-07-20 23:49:15,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199255767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:49:15,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:49:15,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:49:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900935077] [2022-07-20 23:49:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:49:15,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:49:15,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:49:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:49:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:15,677 INFO L87 Difference]: Start difference. First operand 154710 states and 166161 transitions. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:49:19,010 INFO L93 Difference]: Finished difference Result 336454 states and 361113 transitions. [2022-07-20 23:49:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:49:19,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1159 [2022-07-20 23:49:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:49:19,224 INFO L225 Difference]: With dead ends: 336454 [2022-07-20 23:49:19,224 INFO L226 Difference]: Without dead ends: 181746 [2022-07-20 23:49:19,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:49:19,257 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 587 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:49:19,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1356 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 23:49:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181746 states. [2022-07-20 23:49:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181746 to 177240. [2022-07-20 23:49:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177240 states, 177239 states have (on average 1.0673779472915104) internal successors, (189181), 177239 states have internal predecessors, (189181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177240 states to 177240 states and 189181 transitions. [2022-07-20 23:49:21,424 INFO L78 Accepts]: Start accepts. Automaton has 177240 states and 189181 transitions. Word has length 1159 [2022-07-20 23:49:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:49:21,425 INFO L495 AbstractCegarLoop]: Abstraction has 177240 states and 189181 transitions. [2022-07-20 23:49:21,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 177240 states and 189181 transitions. [2022-07-20 23:49:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2022-07-20 23:49:21,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:49:21,519 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:49:21,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 23:49:21,519 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:49:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:49:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -610043044, now seen corresponding path program 1 times [2022-07-20 23:49:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:49:21,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202358840] [2022-07-20 23:49:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:49:21,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:49:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:49:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 996 proven. 552 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 23:49:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:49:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202358840] [2022-07-20 23:49:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202358840] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:49:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466643858] [2022-07-20 23:49:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:49:22,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:49:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:49:22,224 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) [2022-07-20 23:49:22,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 23:49:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:49:22,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:49:22,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:49:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 1174 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-07-20 23:49:22,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:49:22,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466643858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:49:22,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:49:22,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-20 23:49:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502651936] [2022-07-20 23:49:22,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:49:22,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:49:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:49:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:49:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:49:22,793 INFO L87 Difference]: Start difference. First operand 177240 states and 189181 transitions. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:49:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:49:25,914 INFO L93 Difference]: Finished difference Result 395032 states and 422145 transitions. [2022-07-20 23:49:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:49:25,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1196 [2022-07-20 23:49:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:49:26,198 INFO L225 Difference]: With dead ends: 395032 [2022-07-20 23:49:26,198 INFO L226 Difference]: Without dead ends: 218545 [2022-07-20 23:49:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-20 23:49:26,299 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 451 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:49:26,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1255 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 23:49:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218545 states.